If one gallon equals 3.78 litres, how many litres are there in three gallons?

2 Answers
BB
Apr 11, 2018

11.34L

Explanation:

So you have this ratio of gallons to liters:

#1:3.78#

Multiply the number of gallons by 3 to get 3 gallons, and to keep the same ratio, you must also multiply the liters by 3 as well.

#3:11.34#

Tony B
Apr 11, 2018

#11.34 " litres"#

Explanation:

Using ratio in fraction format. Note that this is not a fraction but a direct comparison of counts.

#("litrs")/("gallons")->3.78/1#

But we need 3 gallons so we need to change the 1 into the value of 3.

Multiply by 1 and you do not change the value. However, 1 comes in many forms.

#color(green)(("litrs")/("gallons")->3.78/1color(red)(xx1) color(white)("ddd") ->color(white)("ddd") 3.78/1color(red)(xx3/3)color(white)("d") =color(white)("d") 11.34/3 )#

color(white)("d")

Related questions
See all questions in Equations with Ratios and Proportions
Impact of this question
8400 views around the world
You can reuse this answer
Creative Commons License