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Finding the Fourth Proportional to 8,788, 12,127.82 and 5,062

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Solution

The fourth proportional to 8,788, 12,127.82 and 5,062 is: 6,985.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,788 : 12,127.82 = 5,062 : x
  2. Step 2: Convert to fraction form
    8,788/12,127.82 = 5,062/x
  3. Step 3: Cross multiply
    8,788x = 12,127.82 × 5,062
  4. Step 4: Simplify right side
    8,788x = 61,391,024.84
  5. Step 5: Solve for x
    x = 61,391,024.84/8,788
  6. Step 6: Final answer
    x = 6,985.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.