Proportions

Overview

Introduction to Proportions: In this video, you’ll learn what a proportion is, how to recognize one, and how to solve basic proportion problems using cross-multiplication.
Solving Proportions with One Variable: This video will teach you how to solve proportions when you have one unknown variable. You’ll learn how to set up the proportion and cross-multiply to solve for the variable.
Solving Proportions with Two Variables: If you have two unknown variables in a proportion, don’t worry! This video will show you how to set up and solve for both variables using cross-multiplication and algebraic manipulation.
Proportions with Percentages: Proportions can also involve percentages, and this video will teach you how to use proportions to solve problems involving percentages. You’ll learn how to convert between fractions, decimals, and percentages, and how to use proportions to solve real-world problems involving discounts, markups, and sales tax.
Applications of Proportions: In this video, you’ll learn how to apply proportions to solve a variety of problems in different contexts, such as scaling, maps, and similar figures. You’ll also see how proportions are used in science, engineering, and finance.
Advanced Proportion Problems: This video will challenge you with more complex proportion problems, such as those involving multiple ratios and proportions, inverse proportions, and proportions with square roots or other radicals. You’ll also learn how to use proportions to solve problems involving rates and ratios.
Proportion Word Problems: Finally, this video will teach you how to approach and solve word problems that involve proportions. You’ll learn how to read the problem carefully, identify the relevant information, and set up and solve the proportion to find the answer.