Home / 1,977.97-2,729.69-1,231.96

Finding the Fourth Proportional to 1,977.97, 2,729.69 and 1,231.96

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Solution

The fourth proportional to 1,977.97, 2,729.69 and 1,231.96 is: 1,700.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,977.97 : 2,729.69 = 1,231.96 : x
  2. Step 2: Convert to fraction form
    1,977.97/2,729.69 = 1,231.96/x
  3. Step 3: Cross multiply
    1,977.97x = 2,729.69 × 1,231.96
  4. Step 4: Simplify right side
    1,977.97x = 3,362,868.89
  5. Step 5: Solve for x
    x = 3,362,868.89/1,977.97
  6. Step 6: Final answer
    x = 1,700.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.