A total of 98 students participated in a local community volunteer cleanup project the ratio of boys to girls was 3:4. How many of the students who participated in the community volunteer cleanup project were girls

Let x represent the number of boys participating in the cleanup project.

Since the ratio of boys to girls is 3:4, the total number of students can be split into 3 parts for boys and 4 parts for girls.

This means that the total number of parts is 3 + 4 = 7.

So, the number of girls is 4 parts out of 7 parts, which is \(\frac{4}{7}\) of the total number of students.

The number of girls can be calculated as:
Number of girls = \(\frac{4}{7} * 98\)
Number of girls = \(\frac{4}{7} * 98\)
Number of girls = \(\frac{4 * 98}{7}\)
Number of girls = \(\frac{392}{7}\)
Number of girls = 56

Therefore, there were 56 girls who participated in the community volunteer cleanup project.