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Finding the Third Proportional to 3,789 and 7,767

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Solution

The third proportional to 3,789 and 7,767 is: 15,921.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,789 : 7,767 = 7,767 : x
  2. Step 2: Convert to fraction form
    3,789/7,767 = 7,767/x
  3. Step 3: Cross multiply
    3,789x = 7,767 × 7,767
  4. Step 4: Simplify right side
    3,789x = 60,326,289
  5. Step 5: Solve for x
    x = 60,326,289/3,789
  6. Step 6: Final answer
    x = 15,921.43

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Why These Related Problems?

These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.