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Finding the Third Proportional to 4,172 and 8,885

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Solution

The third proportional to 4,172 and 8,885 is: 18,922.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,172 : 8,885 = 8,885 : x
  2. Step 2: Convert to fraction form
    4,172/8,885 = 8,885/x
  3. Step 3: Cross multiply
    4,172x = 8,885 × 8,885
  4. Step 4: Simplify right side
    4,172x = 78,943,225
  5. Step 5: Solve for x
    x = 78,943,225/4,172
  6. Step 6: Final answer
    x = 18,922.15

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.