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Finding the Third Proportional to 2,511.56 and 3,979.97

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Solution

The third proportional to 2,511.56 and 3,979.97 is: 6,306.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,511.56 : 3,979.97 = 3,979.97 : x
  2. Step 2: Convert to fraction form
    2,511.56/3,979.97 = 3,979.97/x
  3. Step 3: Cross multiply
    2,511.56x = 3,979.97 × 3,979.97
  4. Step 4: Simplify right side
    2,511.56x = 15,840,151.25
  5. Step 5: Solve for x
    x = 15,840,151.25/2,511.56
  6. Step 6: Final answer
    x = 6,306.89

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.