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Finding the Fourth Proportional to 1,877.74, 2,591.13 and 1,038.36

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Solution

The fourth proportional to 1,877.74, 2,591.13 and 1,038.36 is: 1,432.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,877.74 : 2,591.13 = 1,038.36 : x
  2. Step 2: Convert to fraction form
    1,877.74/2,591.13 = 1,038.36/x
  3. Step 3: Cross multiply
    1,877.74x = 2,591.13 × 1,038.36
  4. Step 4: Simplify right side
    1,877.74x = 2,690,519.92
  5. Step 5: Solve for x
    x = 2,690,519.92/1,877.74
  6. Step 6: Final answer
    x = 1,432.85

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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.