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Finding the Third Proportional to 3,890 and 8,927

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Solution

The third proportional to 3,890 and 8,927 is: 20,486.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,890 : 8,927 = 8,927 : x
  2. Step 2: Convert to fraction form
    3,890/8,927 = 8,927/x
  3. Step 3: Cross multiply
    3,890x = 8,927 × 8,927
  4. Step 4: Simplify right side
    3,890x = 79,691,329
  5. Step 5: Solve for x
    x = 79,691,329/3,890
  6. Step 6: Final answer
    x = 20,486.20

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Why These Related Problems?

These problems maintain the same ratio (2.29) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.