Home / 1,731.12-2,591.64-1,489.20

Finding the Fourth Proportional to 1,731.12, 2,591.64 and 1,489.20

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Solution

The fourth proportional to 1,731.12, 2,591.64 and 1,489.20 is: 2,229.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,731.12 : 2,591.64 = 1,489.20 : x
  2. Step 2: Convert to fraction form
    1,731.12/2,591.64 = 1,489.20/x
  3. Step 3: Cross multiply
    1,731.12x = 2,591.64 × 1,489.20
  4. Step 4: Simplify right side
    1,731.12x = 3,859,470.29
  5. Step 5: Solve for x
    x = 3,859,470.29/1,731.12
  6. Step 6: Final answer
    x = 2,229.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.