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Finding the Third Proportional to 7,721 and 10,634

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Solution

The third proportional to 7,721 and 10,634 is: 14,646.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,721 : 10,634 = 10,634 : x
  2. Step 2: Convert to fraction form
    7,721/10,634 = 10,634/x
  3. Step 3: Cross multiply
    7,721x = 10,634 × 10,634
  4. Step 4: Simplify right side
    7,721x = 113,081,956
  5. Step 5: Solve for x
    x = 113,081,956/7,721
  6. Step 6: Final answer
    x = 14,646.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.