At a certain school, the ratio of the number of second graders to the number of fourth graders is 8 to 5, and the ratio of the number of first graders to the number of second graders is 3 to 4. If the ratio of the number of third graders to the number of fourth graders is 3 to 2, what is the ratio of the number of first graders to the number of third graders?

Explanation:

Data provided in the question

The ratios are

Second graders to the fourth grader is

First graders to the second grader is

Third graders to the fourth grader is

Now if we multiplying these above three ratios but the last ratio should be reverse

So, it would be

=

=

Hence, the ratio of first graders to the third graders is

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