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Finding the Fourth Proportional to 3,439.52, 5,159.28 and 1,099.71

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Solution

The fourth proportional to 3,439.52, 5,159.28 and 1,099.71 is: 1,649.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,439.52 : 5,159.28 = 1,099.71 : x
  2. Step 2: Convert to fraction form
    3,439.52/5,159.28 = 1,099.71/x
  3. Step 3: Cross multiply
    3,439.52x = 5,159.28 × 1,099.71
  4. Step 4: Simplify right side
    3,439.52x = 5,673,702.61
  5. Step 5: Solve for x
    x = 5,673,702.61/3,439.52
  6. Step 6: Final answer
    x = 1,649.56

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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.