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Finding the Third Proportional to 4,213.50 and 8,862

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Solution

The third proportional to 4,213.50 and 8,862 is: 18,638.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,213.50 : 8,862 = 8,862 : x
  2. Step 2: Convert to fraction form
    4,213.50/8,862 = 8,862/x
  3. Step 3: Cross multiply
    4,213.50x = 8,862 × 8,862
  4. Step 4: Simplify right side
    4,213.50x = 78,535,044
  5. Step 5: Solve for x
    x = 78,535,044/4,213.50
  6. Step 6: Final answer
    x = 18,638.91

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.