Proportions

Front

What is a proportion?

Back

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

Front

How do you solve a proportion?

Back

To solve a proportion, you can use cross-multiplication, where you multiply the numerator of one ratio by the denominator of the other ratio.

Front

What is the cross-multiplication method?

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

What does it mean for two ratios to form a proportion?

Back

Two ratios form a proportion if they express the same relationship between quantities.

Front

How can you determine if two ratios are proportional?

Back

Two ratios are proportional if their cross products are equal.

Front

What is the formula to find a missing value in a proportion?

Back

If a/b = c/d, then a*d = b*c, allowing you to solve for the missing variable.

Front

What is an example of a real-world application of proportions?

Back

Proportions can be used to determine the amount of ingredients needed in a recipe based on serving size.

Front

How do you write a proportion to find a percentage score?

Back

To find a percentage score, you can set up a proportion like p/total = percent/100.

Front

What is a ratio?

Back

A ratio is a comparison of two quantities, showing how many times one value contains or is contained within the other.

Front

What is the relationship between ratios and fractions?

Back

Ratios can be expressed as fractions, where the first quantity is the numerator and the second quantity is the denominator.