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Finding the Third Proportional to 3,331.50 and 6,778

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Solution

The third proportional to 3,331.50 and 6,778 is: 13,789.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,331.50 : 6,778 = 6,778 : x
  2. Step 2: Convert to fraction form
    3,331.50/6,778 = 6,778/x
  3. Step 3: Cross multiply
    3,331.50x = 6,778 × 6,778
  4. Step 4: Simplify right side
    3,331.50x = 45,941,284
  5. Step 5: Solve for x
    x = 45,941,284/3,331.50
  6. Step 6: Final answer
    x = 13,789.97

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Why These Related Problems?

These problems maintain the same ratio (2.03) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.