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Finding the Third Proportional to 3,908 and 9,011

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Solution

The third proportional to 3,908 and 9,011 is: 20,777.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,908 : 9,011 = 9,011 : x
  2. Step 2: Convert to fraction form
    3,908/9,011 = 9,011/x
  3. Step 3: Cross multiply
    3,908x = 9,011 × 9,011
  4. Step 4: Simplify right side
    3,908x = 81,198,121
  5. Step 5: Solve for x
    x = 81,198,121/3,908
  6. Step 6: Final answer
    x = 20,777.41

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Why These Related Problems?

These problems maintain the same ratio (2.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.