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Finding the Fourth Proportional to 3,671.68, 5,508.20 and 1,591.30

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Solution

The fourth proportional to 3,671.68, 5,508.20 and 1,591.30 is: 2,387.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,671.68 : 5,508.20 = 1,591.30 : x
  2. Step 2: Convert to fraction form
    3,671.68/5,508.20 = 1,591.30/x
  3. Step 3: Cross multiply
    3,671.68x = 5,508.20 × 1,591.30
  4. Step 4: Simplify right side
    3,671.68x = 8,765,178.54
  5. Step 5: Solve for x
    x = 8,765,178.54/3,671.68
  6. Step 6: Final answer
    x = 2,387.24

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1.5x scale

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.