Activity
Wyzant

Wyzant: Proportion Calculator

For Students 9th - 10th Standards
Students enter problems into a proportion calculator to see the solutions. The calculator solves proportions using cross product properties.
Activity
Shmoop University

Shmoop: Ratios & Percentages: Solving Proportions

For Students 9th - 10th Standards
Students learn how to solve proportions. The mathematics resource consists of examples and practice problems with answers.
Activity
Wyzant

Wyzant: Basics of Proportions

For Students 9th - 10th
This tutorial from WyzAnt on proportions describes in detail the functions of proportions and includes several examples to demonstrate how to solve proportions. The tutorial is concluded with an interactive worksheet that allows for...
Handout
Purple Math

Purplemath: Proportions: Introduction

For Students 6th - 8th Standards
Explains the basics and terminology of proportions.
Interactive
Calculator Soup

Calculator Soup: Fractions Solve for Unknown X

For Students 9th - 10th
Solve for an unknown value x with this fractions calculator. Find the missing fraction variable in the proportion using cross multiplication to calculate the unknown variable x. Solve the proportion between 2 fractions and calculate the...
Activity
Varsity Tutors

Varsity Tutors: Hotmath: Algebra Review: Proportions

For Students 9th - 10th Standards
Find a quick, concise explanation of proportions. An example is given and clearly explained.