Proportion - how to see if ratios are in proportion

[fayesharpe]

This is amazing!! I used to hate math as a child. Attending college as an adult studying maths I need videos like these! You're my fav math Tutor as you make things appear so interesting and fun:)

[riyarana]

To sum it up- just cross multiply both ratios
Thank me later I just saved you 9 minutes (let's get this to the top so everyone can see)

[TotallyNotDehansa]

When I first found your channel, I was stunned to see how easy math can be! I could understand way better. Your 9 minute videos really do explain a lot and make more sense than many weeks of learning the same topic.😂 Thank you for these awesome videos. You make these lessons feel like they are not hard and I really enjoy watching these! Thank you! 😄

[JohannaBarcelo]

this helped a lot made it way easier for me to explain my son, he loves this video and learned from it. thank you for taking your time.

[MartiDeBord]

Your vids are brilliant. I always come back to your channel when i need help with math. Thank you!!!!

[sargonyousuf]

Hi tecmath,
Can you please make a video where you explain unit ratios and scale factors and how you could work them Out.
Thanks

[loufuidge]

these videos are fantastic.. well done keep it up, I've been out of school for 15 years and I've found this so easy and helpful, I've learnt A LOT more from your videos then I did at school.. you explain it perfectly... THANK YOU FOR MAKING MATHS EASIER TO UNDERSTAND 😀

[the_bzt]

These Math Videos Are Easier To Understand In YouTube Than School
Ty for the lesson! :D

[puspagalden]

Thankyou sooo much!
The math was very hard for me, and after looking your all of those videos i got A in examination....❤
Once again thankyou so much.. Please make another videos also like this..
From nepal🇳🇵🇳🇵😁

[safepethaven]

"Cross multiply is a common but very vintage term -- I remember my father using it when he explained arithmetic problems to me, and he was educated in the 1930's; my elementary education was in the late 1950s and early 1960s. By 1963 the lingo was formalized to be:"The Means-Extremes" Rule, or stated otherwise: When operating with Ratios and Proportions, the product of the means equals the product of the extremes.

[katelyny]

My teacher: “So if you just look at it and you san see that these are of the same value because 3 times 3 is 9 so that is equal and then 15 times 3 is 45 so that is also equal, meaning yes it is a proportion.

Everybody else in the class: Yes. I understand.

Me: What-

*searches on youtube 1 DAY before test: How to solve proportions and figure out whether they are true or not*

*finds this video*

Me: *3 Minutes in*

Also me: I UNDERSTAND.

[jenniferperez]

You are such an amazing teacher! I'm one of those women who have been horribly bad at math since grade school! Now, in my 20's, I must take a math placement test for college .. and let me tell you! I've watched video after video, and I'm breezing threw it. If I had had you as a teacher to begin with, maybe I would have understood mathematics for the get-go! Thank you! :)

[jamilleanastacio]

Thanks for this video it really helps me in my assignments

[sangitachoudhury]

Thanks sir .The teaching was very good. 👍

[annieaquino]

Thank You For This It helped me finish my homework :D i highly recommend this channel if u need to learn about math

[monsterjazzlicks]

@ 5:10 - would the answer therefore be: '90:91'? Thanks.

[anuradhaupadhyay]

THANKS for such kind of explanation i liked it

[alexanderhuxley]

Let's all be honest, this guy saved us in some way.

[ellaeleponga]

Oh my god this explanation is so great i understand it now i know how to know if what is a proportion thank u somuch

[destinycamaro]

Thanks dude! you help me every time. Amazing videos!