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Finding the Third Proportional to 1,177.88 and 2,487.38

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Solution

The third proportional to 1,177.88 and 2,487.38 is: 5,252.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,177.88 : 2,487.38 = 2,487.38 : x
  2. Step 2: Convert to fraction form
    1,177.88/2,487.38 = 2,487.38/x
  3. Step 3: Cross multiply
    1,177.88x = 2,487.38 × 2,487.38
  4. Step 4: Simplify right side
    1,177.88x = 6,187,034.39
  5. Step 5: Solve for x
    x = 6,187,034.39/1,177.88
  6. Step 6: Final answer
    x = 5,252.71

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.