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Finding the Third Proportional to 5,120.09 and 8,141.13

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Solution

The third proportional to 5,120.09 and 8,141.13 is: 12,944.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,120.09 : 8,141.13 = 8,141.13 : x
  2. Step 2: Convert to fraction form
    5,120.09/8,141.13 = 8,141.13/x
  3. Step 3: Cross multiply
    5,120.09x = 8,141.13 × 8,141.13
  4. Step 4: Simplify right side
    5,120.09x = 66,278,043.47
  5. Step 5: Solve for x
    x = 66,278,043.47/5,120.09
  6. Step 6: Final answer
    x = 12,944.71

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.