solving proportions

Front

What is a proportion?

Back

A proportion is an equation that states that two ratios (fractions) are equal to each other.

Front

Back

3x = 8

Front

Back

a * d = b * c

Front

What is the cross-multiplication method used for?

Back

It is used to solve proportions by multiplying the numerator of one fraction by the denominator of the other.

Front

Back

y = 1

Front

Back

x = 8

Front

What does it mean if two ratios are equivalent?

Back

It means that they represent the same relationship between quantities.

Front

Back

x = 14

Front

What is the first step in solving a proportion?

Back

Set the two ratios equal to each other.

Front

Back

d = 6