Math Review: Proportions (Explained in Spanish)

What is a proportion? What are equivalent ratios? How to solve a proportion?
¿Qué es una proporción? ¿Qué son razones equivalentes? ¿Cómo resolvemos una proporción?

00:00 - Introduction
00:01 - Definition
00:32 - Example 1a
00:49 - Method 1: Simplification
01:45 - Method 2: Cross product
02:54 - Example 1b
03:10 - Method 1: Simplification
04:05 - Method 2: Cross product
05:19 - Try it! 1a
06:02 - Try it! 1b
06:44 - Example 2
08:06 - Try it! 2
08:56 - How to find equivalent ratios
09:06 - Example 3a
09:22 - Example 3b
10:45 - Example 4a
11:40 - Tri it! 4b
12:40 - One advice