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Finding the Fourth Proportional to 8,906.55, 13,359.95 and 3,976.47

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Solution

The fourth proportional to 8,906.55, 13,359.95 and 3,976.47 is: 5,964.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,906.55 : 13,359.95 = 3,976.47 : x
  2. Step 2: Convert to fraction form
    8,906.55/13,359.95 = 3,976.47/x
  3. Step 3: Cross multiply
    8,906.55x = 13,359.95 × 3,976.47
  4. Step 4: Simplify right side
    8,906.55x = 53,125,440.38
  5. Step 5: Solve for x
    x = 53,125,440.38/8,906.55
  6. Step 6: Final answer
    x = 5,964.76

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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.