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Finding the Third Proportional to 6,290 and 11,812

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Solution

The third proportional to 6,290 and 11,812 is: 22,181.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,290 : 11,812 = 11,812 : x
  2. Step 2: Convert to fraction form
    6,290/11,812 = 11,812/x
  3. Step 3: Cross multiply
    6,290x = 11,812 × 11,812
  4. Step 4: Simplify right side
    6,290x = 139,523,344
  5. Step 5: Solve for x
    x = 139,523,344/6,290
  6. Step 6: Final answer
    x = 22,181.77

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Why These Related Problems?

These problems maintain the same ratio (1.88) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.