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Finding the Third Proportional to 7,759 and 8,479

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Solution

The third proportional to 7,759 and 8,479 is: 9,265.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,759 : 8,479 = 8,479 : x
  2. Step 2: Convert to fraction form
    7,759/8,479 = 8,479/x
  3. Step 3: Cross multiply
    7,759x = 8,479 × 8,479
  4. Step 4: Simplify right side
    7,759x = 71,893,441
  5. Step 5: Solve for x
    x = 71,893,441/7,759
  6. Step 6: Final answer
    x = 9,265.81

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Why These Related Problems?

These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.