How do you explain the ratio and proporiont of the letters

The ratio of two numbers or quantities can be expressed as a fraction, where the numerator represents the first number and the denominator represents the second number. For example, if the ratio of boys to girls in a classroom is 2:1, this can be written as 2/1.

Proportion is when two ratios are equal. For example, if the ratio of boys to girls in two different classrooms is 2:1 and 4:2 respectively, these ratios are in proportion because they are equal (2/1 = 4/2).

In terms of letters, the ratio or proportion of letters in a word or sentence can represent the frequency of each letter occurring. For example, in the word "banana", the ratio of the letter "a" to the letter "b" is 3:1. This can also be expressed as a proportion by comparing these ratios to other letters in the word.