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Finding the Third Proportional to 2,687.25 and 4,153.13

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Solution

The third proportional to 2,687.25 and 4,153.13 is: 6,418.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,687.25 : 4,153.13 = 4,153.13 : x
  2. Step 2: Convert to fraction form
    2,687.25/4,153.13 = 4,153.13/x
  3. Step 3: Cross multiply
    2,687.25x = 4,153.13 × 4,153.13
  4. Step 4: Simplify right side
    2,687.25x = 17,248,447.27
  5. Step 5: Solve for x
    x = 17,248,447.27/2,687.25
  6. Step 6: Final answer
    x = 6,418.62

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.