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Finding the Third Proportional to 5,165 and 10,636

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Solution

The third proportional to 5,165 and 10,636 is: 21,902.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,165 : 10,636 = 10,636 : x
  2. Step 2: Convert to fraction form
    5,165/10,636 = 10,636/x
  3. Step 3: Cross multiply
    5,165x = 10,636 × 10,636
  4. Step 4: Simplify right side
    5,165x = 113,124,496
  5. Step 5: Solve for x
    x = 113,124,496/5,165
  6. Step 6: Final answer
    x = 21,902.13

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Why These Related Problems?

These problems maintain the same ratio (2.06) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.