Equivalent Ratios/Proportions

Front

What is an equivalent ratio?

Back

An equivalent ratio is a ratio that expresses the same relationship between two quantities, even if the numbers are different. For example, the ratios 1:2 and 2:4 are equivalent.

Front

How do you simplify a ratio?

Back

To simplify a ratio, divide both terms of the ratio by their greatest common divisor (GCD). For example, to simplify the ratio 8:12, divide both by 4 to get 2:3.

Front

Express the ratio 18 ounces to 3 cups as a fraction in simplest form.

Back

6 to 1.

Front

What is the ratio of the number of lawn mowers purchased in spring to the total sold in a year if 441 were sold in spring and 630 in total?

Back

7:10.

Front

If there are 4 birds and 6 snakes, what is the ratio of birds to total animals?

Back

4/10.

Front

What is the formula to find the ratio of two quantities?

Back

The formula is Ratio = Quantity 1 : Quantity 2.

Front

How do you find the value of x in a proportion?

Back

Cross-multiply the terms and solve for x. For example, if a/b = c/x, then a*x = b*c.

Front

What does it mean if two ratios are proportional?

Back

It means that the two ratios express the same relationship between their respective quantities.

Front

Solve for x: 3/4 = x/16.

Back

x = 12.

Front

If a recipe calls for 2 cups of flour for every 3 cups of sugar, what is the ratio of flour to sugar?

Back

2:3.