Those who won the first and second prizes accounted for three-eighths of the total number of winners, and those who won the second and third prizes accounted for seven-eighths of the total number of winners.

Then, the number of first prize winners+second prize winners+second prize winners+third prize winners =3/8+7/8= 10/8=5/4.

Therefore, we can draw the conclusion that the ratio of the number of people who won the second prize to the total number of winners is: 5/4- 1= 1/4.

Therefore, the ratio of the number of winners in the first prize to the total number of winners is 3/8- 1/4= 1/8.

Score calculation method:

When comparing the sizes of two fractions, the numerator or denominator of the two fractions are the same or similar to simplify the calculation, which generally includes three levels:

Make the numerator (denominator) exactly the same first, so you only need to look at the denominator (or numerator).

Two, after the numerator (or denominator) is similar, there is a situation that "the denominator of a fraction is larger, the numerator is smaller" or "the denominator of a fraction is smaller, the numerator is larger", so the size of two fractions can be directly judged. The difference method of quick calculation skill five.