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Finding the Fourth Proportional to 8,488.40, 12,737.40 and 3,294.64

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Solution

The fourth proportional to 8,488.40, 12,737.40 and 3,294.64 is: 4,943.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,488.40 : 12,737.40 = 3,294.64 : x
  2. Step 2: Convert to fraction form
    8,488.40/12,737.40 = 3,294.64/x
  3. Step 3: Cross multiply
    8,488.40x = 12,737.40 × 3,294.64
  4. Step 4: Simplify right side
    8,488.40x = 41,965,147.54
  5. Step 5: Solve for x
    x = 41,965,147.54/8,488.40
  6. Step 6: Final answer
    x = 4,943.82

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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.