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Finding the Third Proportional to 6,221 and 8,868

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Solution

The third proportional to 6,221 and 8,868 is: 12,641.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,221 : 8,868 = 8,868 : x
  2. Step 2: Convert to fraction form
    6,221/8,868 = 8,868/x
  3. Step 3: Cross multiply
    6,221x = 8,868 × 8,868
  4. Step 4: Simplify right side
    6,221x = 78,641,424
  5. Step 5: Solve for x
    x = 78,641,424/6,221
  6. Step 6: Final answer
    x = 12,641.28

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.