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Finding the Fourth Proportional to 3,671.32, 5,509.00 and 1,591.34

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Solution

The fourth proportional to 3,671.32, 5,509.00 and 1,591.34 is: 2,387.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,671.32 : 5,509.00 = 1,591.34 : x
  2. Step 2: Convert to fraction form
    3,671.32/5,509.00 = 1,591.34/x
  3. Step 3: Cross multiply
    3,671.32x = 5,509.00 × 1,591.34
  4. Step 4: Simplify right side
    3,671.32x = 8,766,681.20
  5. Step 5: Solve for x
    x = 8,766,681.20/3,671.32
  6. Step 6: Final answer
    x = 2,387.88

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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.