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Finding the Third Proportional to 3,815 and 7,738

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Solution

The third proportional to 3,815 and 7,738 is: 15,695.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,815 : 7,738 = 7,738 : x
  2. Step 2: Convert to fraction form
    3,815/7,738 = 7,738/x
  3. Step 3: Cross multiply
    3,815x = 7,738 × 7,738
  4. Step 4: Simplify right side
    3,815x = 59,876,644
  5. Step 5: Solve for x
    x = 59,876,644/3,815
  6. Step 6: Final answer
    x = 15,695.06

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Why These Related Problems?

These problems maintain the same ratio (2.03) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.