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Finding the Third Proportional to 3,898 and 9,106

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Solution

The third proportional to 3,898 and 9,106 is: 21,272.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,898 : 9,106 = 9,106 : x
  2. Step 2: Convert to fraction form
    3,898/9,106 = 9,106/x
  3. Step 3: Cross multiply
    3,898x = 9,106 × 9,106
  4. Step 4: Simplify right side
    3,898x = 82,919,236
  5. Step 5: Solve for x
    x = 82,919,236/3,898
  6. Step 6: Final answer
    x = 21,272.25

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Why These Related Problems?

These problems maintain the same ratio (2.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.