Properties of Proportions

Front

What is a proportion?

Back

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

Front

What does it mean for two ratios to be equivalent?

Back

Two ratios are equivalent if they represent the same relationship between quantities.

Front

Find a ratio that is equivalent to 2:5.

Back

6:15

Front

What is the cross-multiplication property of proportions?

Back

If a/b = c/d, then a*d = b*c.

Front

Is the statement 'If a/b = c/d, then a + b = c + d' true or false?

Back

False.

Front

Back

Front

Back

x = 4.

Front

What is the property of proportions that states if you add the same number to both terms of a ratio, the new ratio is equivalent?

Back

This is known as the Addition Property of Proportions.

Front

Back

The means (b and c) are equal, and the extremes (a and d) are equal.

Front

What is the definition of a ratio?

Back

A ratio is a comparison of two quantities by division.