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Finding the Fourth Proportional to 8,006.73, 12,006.72 and 2,811.39

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Solution

The fourth proportional to 8,006.73, 12,006.72 and 2,811.39 is: 4,215.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,006.73 : 12,006.72 = 2,811.39 : x
  2. Step 2: Convert to fraction form
    8,006.73/12,006.72 = 2,811.39/x
  3. Step 3: Cross multiply
    8,006.73x = 12,006.72 × 2,811.39
  4. Step 4: Simplify right side
    8,006.73x = 33,755,572.54
  5. Step 5: Solve for x
    x = 33,755,572.54/8,006.73
  6. Step 6: Final answer
    x = 4,215.90

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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.