If w is inversely proportional to the square of v, and w=3 when v=6, fund w when v=3

From the information, w=k/√v

where k is the constant of proportionality, given by:

k=w√v

w=3 when v=6

thus

k=3√6

hence:

w = (3√6) / √v

hence the value of w when v=3 will be:

w = (3√6) / √3

w~4.24264