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Finding the Third Proportional to 7,641 and 10,309

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Solution

The third proportional to 7,641 and 10,309 is: 13,908.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,641 : 10,309 = 10,309 : x
  2. Step 2: Convert to fraction form
    7,641/10,309 = 10,309/x
  3. Step 3: Cross multiply
    7,641x = 10,309 × 10,309
  4. Step 4: Simplify right side
    7,641x = 106,275,481
  5. Step 5: Solve for x
    x = 106,275,481/7,641
  6. Step 6: Final answer
    x = 13,908.58

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.