Math Fractions & Equations : Cross Multiplying Proportions

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Uploaded by on Nov 22, 2008

The best way to multiply proportions is through cross multiplication. Reduce a proportion before cross multiplying with help from a math author and teacher in this free video on math lessons.

Expert: Brian Leaf
Contact: www.brianleaf.com
Bio: Brian Leaf, MA, is the author of McGraw-Hill's Top 50 Skills for SAT/ACT Success series and has instructed SAT, ACT, GED and SSAT preparation to thousands of students.
Filmmaker: David Pakman

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Top Comments

  • @mario64shine That has to be the corniest comment I have ever read.

    :/

  • Sicc its very helpful

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All Comments (21)

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  • @flylilbilly he is

  • @mario64shine lame dude just lame

  • @rustypasta what did he say??

  • eHOW , you guys are the best. thanks

  • Why the fuck are these guys not teaching in my class?

  • ha ha "you could guess and check"

    

  • thanks, helped me a lot.

  • @mario64shine wow...your sad

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