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Finding the Third Proportional to 6,489 and 10,068.75

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Solution

The third proportional to 6,489 and 10,068.75 is: 15,623.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,489 : 10,068.75 = 10,068.75 : x
  2. Step 2: Convert to fraction form
    6,489/10,068.75 = 10,068.75/x
  3. Step 3: Cross multiply
    6,489x = 10,068.75 × 10,068.75
  4. Step 4: Simplify right side
    6,489x = 101,379,726.56
  5. Step 5: Solve for x
    x = 101,379,726.56/6,489
  6. Step 6: Final answer
    x = 15,623.32

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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.