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Finding the Third Proportional to 2,170.50 and 3,864

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Solution

The third proportional to 2,170.50 and 3,864 is: 6,878.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,170.50 : 3,864 = 3,864 : x
  2. Step 2: Convert to fraction form
    2,170.50/3,864 = 3,864/x
  3. Step 3: Cross multiply
    2,170.50x = 3,864 × 3,864
  4. Step 4: Simplify right side
    2,170.50x = 14,930,496
  5. Step 5: Solve for x
    x = 14,930,496/2,170.50
  6. Step 6: Final answer
    x = 6,878.83

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Why These Related Problems?

These problems maintain the same ratio (1.78) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.