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Finding the Third Proportional to 3,280.50 and 6,723

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Solution

The third proportional to 3,280.50 and 6,723 is: 13,778

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,280.50 : 6,723 = 6,723 : x
  2. Step 2: Convert to fraction form
    3,280.50/6,723 = 6,723/x
  3. Step 3: Cross multiply
    3,280.50x = 6,723 × 6,723
  4. Step 4: Simplify right side
    3,280.50x = 45,198,729
  5. Step 5: Solve for x
    x = 45,198,729/3,280.50
  6. Step 6: Final answer
    x = 13,778

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Why These Related Problems?

These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.