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Finding the Fourth Proportional to 8,472.97, 12,710.27 and 2,628.01

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Solution

The fourth proportional to 8,472.97, 12,710.27 and 2,628.01 is: 3,942.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,472.97 : 12,710.27 = 2,628.01 : x
  2. Step 2: Convert to fraction form
    8,472.97/12,710.27 = 2,628.01/x
  3. Step 3: Cross multiply
    8,472.97x = 12,710.27 × 2,628.01
  4. Step 4: Simplify right side
    8,472.97x = 33,402,691.46
  5. Step 5: Solve for x
    x = 33,402,691.46/8,472.97
  6. Step 6: Final answer
    x = 3,942.27

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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.