The side length of the cube will only go up by a factor of 2.
Think about it like finding the volume of a cube in reverse:

If we multiply the left and right sides of this equation by 8:

And try to "distribute" the 8 by splitting it up into three 2's:




We can see the side length only doubles.
Multiply both sides by 2200/1760 * 2200/1760 and you get 1.25
With 20 tickets sold the revenue would be 30
With 2 it would be $3
Therefore 1 ticket would have a $1.50 revenue