Proportions

Front

What is a proportion?

Back

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

Front

How do you set up a proportion to find an unknown value?

Back

You can set up a proportion by creating a fraction that compares two quantities and setting it equal to another fraction that compares two other quantities.

Front

What is the cross-multiplication method in solving proportions?

Back

The cross-multiplication method involves multiplying the numerator of one fraction by the denominator of the other fraction and setting the two products equal to each other.

Front

If a test is worth 12 points and a student wants to score 75%, how do you express this as a proportion?

Back

The proportion is expressed as p/12 = 75/100.

Front

What is the first step to solve the proportion p/12 = 75/100?

Back

Cross-multiply to get 100p = 12 * 75.

Front

What is the solution to the equation 100p = 12 * 75?

Back

p = 90.

Front

What does it mean for two ratios to be proportional?

Back

Two ratios are proportional if they can be expressed as equivalent fractions.

Front

Which ratio is proportional to 5/6?

Back

25/30 is proportional to 5/6.

Front

How can you determine if two ratios are proportional?

Back

You can determine if two ratios are proportional by cross-multiplying and checking if the products are equal.

Front

How do you write a proportion using a table of values?

Back

You can write a proportion by comparing corresponding values from the table.