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Finding the Third Proportional to 1,237.88 and 2,689.13

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Solution

The third proportional to 1,237.88 and 2,689.13 is: 5,841.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,237.88 : 2,689.13 = 2,689.13 : x
  2. Step 2: Convert to fraction form
    1,237.88/2,689.13 = 2,689.13/x
  3. Step 3: Cross multiply
    1,237.88x = 2,689.13 × 2,689.13
  4. Step 4: Simplify right side
    1,237.88x = 7,231,393.27
  5. Step 5: Solve for x
    x = 7,231,393.27/1,237.88
  6. Step 6: Final answer
    x = 5,841.78

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.