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Finding the Third Proportional to 1,939.88 and 4,098.75

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Solution

The third proportional to 1,939.88 and 4,098.75 is: 8,660.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,939.88 : 4,098.75 = 4,098.75 : x
  2. Step 2: Convert to fraction form
    1,939.88/4,098.75 = 4,098.75/x
  3. Step 3: Cross multiply
    1,939.88x = 4,098.75 × 4,098.75
  4. Step 4: Simplify right side
    1,939.88x = 16,799,751.56
  5. Step 5: Solve for x
    x = 16,799,751.56/1,939.88
  6. Step 6: Final answer
    x = 8,660.22

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.