The ratio of men to women at the game is 13:5. The difference between the number of men and women is 4152. Subtract 5 from 13 to work out the difference between the ratio value of men and women. 13-5=8. Divide 4152 by 8 to work out how many people 1 in the ratio represents. Then times this value (which is 519) by 7 (the ratio value for children) to work out the total number of children at the game. 519×7= 3633.