If 1/3 of a gallon of paint covers 2/3 of a wall how many gallons of paint or needed to cover the entire wall

For this case we propose a rule of three:

gallon ------------> wall

x -------------------------------------> 1 wall

Where the variable "x" represents the amount of gallons of paint needed to cover the entire wall.

Thus,of gallon of paint covers the entire wall.

gallon of paint covers the entire wall.

you just switch the numbers basically so it would be 3/17

what chart am i supposed to follow?