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Finding the Third Proportional to 3,071.50 and 3,993

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Solution

The third proportional to 3,071.50 and 3,993 is: 5,190.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,071.50 : 3,993 = 3,993 : x
  2. Step 2: Convert to fraction form
    3,071.50/3,993 = 3,993/x
  3. Step 3: Cross multiply
    3,071.50x = 3,993 × 3,993
  4. Step 4: Simplify right side
    3,071.50x = 15,944,049
  5. Step 5: Solve for x
    x = 15,944,049/3,071.50
  6. Step 6: Final answer
    x = 5,190.97

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Why These Related Problems?

These problems maintain the same ratio (1.30) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.