75.4k views
3 votes
×

(x)/(4) = (6)/(12) solve the proportions

User Linibou
by
6.8k points

1 Answer

4 votes
To solve a problem like this, you can use a method called cross-multiplying. This is when you multiply the denominator of the first fraction by the numerator of the other and then multiply the two remaining numbers.


(x)/(4) = (6)/(12) To make this easier on yourself, simplify first!

(x)/(4) = (1)/(2) Multiply x by 2 and multiply 4 by 1.
2x = 4 Divide both sides by 2.
x = 2

You can check this by comparing the fractions with 2 in the place of x.


(2)/(4) = (6)/(12) Simplify!

(1)/(2) = (1)/(2)

The fractions are equal, so x = 2 .