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Recap: Proportions

Part of the Decimals, Percents & Ratios section of Coddy's Pre-Algebra journey. Lesson 48 of 53.

Challenge

Find the missing number n that makes the two ratios on the board equal, then type your claim.

Try it yourself

\frac{12}{n} = \frac{4}{7}

Get $n$ alone

All lessons in Decimals, Percents & Ratios

1Decimals

Place Value Rounding Decimals Recap: Decimals

4Dividing Decimals

Dividing by a Decimal Dividing by 10 and 100 Dividing by a Whole Number Unit Price Recap: Dividing

7Percent Problems

Finding the Whole Discounts Tax and Tips Percent Increase Percent Decrease Recap: Percent Problems

10Proportions

Solving a Proportion Cross Products Scale Drawings Percent as a ProportionRecap: Proportions

2Adding and Subtracting

Line Up the Points Negative Decimals Making Change Recap: Add and Subtract

5Fractions and Decimals

Fraction to Decimal Decimal to Fraction Repeating Decimals Ordering Both Kinds Recap: Fractions and Decimals

8Ratios

What a Ratio Is Simplifying Ratios Equivalent Ratios Sharing in a Ratio Recap: Ratios

11Final Challenges

Final: Decimals and Percents Final: The Jacket Final: Out of a Hundred Final: The Apple Stall Final: On the Line

3Multiplying Decimals

Multiplying Decimals Times 10, 100, 1000 Bigger Products Buying by Weight Recap: Multiplying

6Percent Basics

What Percent Means Percent of a Number Percent as a Decimal What Percent Is It Recap: Percent Basics

9Rates

Unit Rates The Better Buy Speed, Distance, Time Converting Units Recap: Rates