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Finding the Third Proportional to 3,418.50 and 6,486

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Solution

The third proportional to 3,418.50 and 6,486 is: 12,306.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,418.50 : 6,486 = 6,486 : x
  2. Step 2: Convert to fraction form
    3,418.50/6,486 = 6,486/x
  3. Step 3: Cross multiply
    3,418.50x = 6,486 × 6,486
  4. Step 4: Simplify right side
    3,418.50x = 42,068,196
  5. Step 5: Solve for x
    x = 42,068,196/3,418.50
  6. Step 6: Final answer
    x = 12,306.04

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Why These Related Problems?

These problems maintain the same ratio (1.90) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.