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Finding the Third Proportional to 6,490.13 and 9,128.25

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Solution

The third proportional to 6,490.13 and 9,128.25 is: 12,838.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,490.13 : 9,128.25 = 9,128.25 : x
  2. Step 2: Convert to fraction form
    6,490.13/9,128.25 = 9,128.25/x
  3. Step 3: Cross multiply
    6,490.13x = 9,128.25 × 9,128.25
  4. Step 4: Simplify right side
    6,490.13x = 83,324,948.06
  5. Step 5: Solve for x
    x = 83,324,948.06/6,490.13
  6. Step 6: Final answer
    x = 12,838.73

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.