Proportions

Front

What is a proportion?

Back

A proportion is an equation that states that two ratios are equal.

Front

How do you solve for a variable in a proportion?

Back

Cross-multiply the ratios and then isolate the variable.

Front

If 4/6 = 10/x-8, what is the value of x?

Back

23

Front

If 4/3 = 8/x, what is the value of x?

Back

6

Front

What does it mean if two ratios are equivalent?

Back

It means that they represent the same relationship between quantities.

Front

If 9/p+8 = 6/2, what is the value of p?

Back

-5

Front

What is the cross-multiplication method?

Back

A method used to solve proportions by multiplying the numerator of one ratio by the denominator of the other ratio.

Front

If x-8/x = 9/7, what is the value of x?

Back

-28

Front

If 6/8 = n/n-6, what is the value of n?

Back

-18

Front

What is the first step in solving a proportion?

Back

Identify the two ratios that are being compared.