What is 4.981818181... as a Fraction?

4.981 equals 27455 as a fraction.

How do you turn 4.981 repeating into a fraction?

Detailed Answer:

Step 1: To convert 4.981 repeating into a fraction, begin writing this simple equation:

n = 4.981 (equation 1)

Step 2: Notice that there are 2 digits in the repeating block (81) and 1 digit in the non-repeating part (9). Multiply both sides by 10³ = 1000.

1000 × n = 4981.81 (equation 2)

Step 3: Now subtract equation 1 from equation 2 to cancel the repeating block (or repetend) out.

1000 × n = 4981.81
  10 × n = 4.981
 990 × n = 4932

4932990 could be the answer, but it still can be put in the simplest form, i.e., reduced.

To simplify this fraction, divide the numerator and denominator by 18 (the GCF - greatest common factor).

n = 4932990 = 4932 ÷ 18990 ÷ 18 = 27455. So,

4.981 = 27455 as the lowest possible fraction.

As the numerator is greater than the denominator, we have an improper fraction, so we can also express it as a mixed number, thus 27455 is also equal to 45455 when expressed as a mixed number.

The repeating decimal 4.981 (vinculum notation) has a repeated block length of 2. It is also represented as 4.9818181... (ellipsis notation) which equals approximately 4.98181818181 (decimal approximation)(*).

The recurring decimal 4.981 can be written as a ratio of two integers having 274 as the numerator and 55 as the denominator. So, it is a rational number (named after ratio). It can be shown that a number is rational if its decimal representation is repeating or terminating.

(*) At present, there is no single universally accepted notation or phrasing for repeating decimals.