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Finding the Third Proportional to 6,431.06 and 9,661.78

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Solution

The third proportional to 6,431.06 and 9,661.78 is: 14,515.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,431.06 : 9,661.78 = 9,661.78 : x
  2. Step 2: Convert to fraction form
    6,431.06/9,661.78 = 9,661.78/x
  3. Step 3: Cross multiply
    6,431.06x = 9,661.78 × 9,661.78
  4. Step 4: Simplify right side
    6,431.06x = 93,350,016.92
  5. Step 5: Solve for x
    x = 93,350,016.92/6,431.06
  6. Step 6: Final answer
    x = 14,515.49

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.