What are the next four multiples of the unit fraction 1/2

2 x 1/2 = 2/2 x 1/2 = 2/2 = 1; 3 x 1/2 = 3/1 x 1/2 = 3/2;  4 x 1/2 = 4/1 x 1/2 = 4/2 = 2; 5 x 1/2 = 5/1 x 1/2 = 5/2; so 1, 3/2, 2, and 5/2 are the next four multiples. 

What’s the equation you are trying to solve to get x?