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Finding the Third Proportional to 5,516 and 7,662

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Solution

The third proportional to 5,516 and 7,662 is: 10,642.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,516 : 7,662 = 7,662 : x
  2. Step 2: Convert to fraction form
    5,516/7,662 = 7,662/x
  3. Step 3: Cross multiply
    5,516x = 7,662 × 7,662
  4. Step 4: Simplify right side
    5,516x = 58,706,244
  5. Step 5: Solve for x
    x = 58,706,244/5,516
  6. Step 6: Final answer
    x = 10,642.90

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.