Answer: The number of soccer players is four times the number of volleyball players .
Step-by-step explanation:
Given : In a school , the ratio of a soccer players to volleyball players is 4:1.
i.e. 
Let Number of volleyball players be x. (1)
Then , 
Multiply x to the both sides , we get

From (1) , we have

Hence, The number of soccer players is four times the number of volleyball players .