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Finding the Third Proportional to 3,705 and 8,857

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Solution

The third proportional to 3,705 and 8,857 is: 21,173.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,705 : 8,857 = 8,857 : x
  2. Step 2: Convert to fraction form
    3,705/8,857 = 8,857/x
  3. Step 3: Cross multiply
    3,705x = 8,857 × 8,857
  4. Step 4: Simplify right side
    3,705x = 78,446,449
  5. Step 5: Solve for x
    x = 78,446,449/3,705
  6. Step 6: Final answer
    x = 21,173.13

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Why These Related Problems?

These problems maintain the same ratio (2.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.