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Finding the Third Proportional to 3,138.12 and 5,047.95

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Solution

The third proportional to 3,138.12 and 5,047.95 is: 8,120.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,138.12 : 5,047.95 = 5,047.95 : x
  2. Step 2: Convert to fraction form
    3,138.12/5,047.95 = 5,047.95/x
  3. Step 3: Cross multiply
    3,138.12x = 5,047.95 × 5,047.95
  4. Step 4: Simplify right side
    3,138.12x = 25,481,751.88
  5. Step 5: Solve for x
    x = 25,481,751.88/3,138.12
  6. Step 6: Final answer
    x = 8,120.08

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Why These Related Problems?

These problems maintain the same ratio (1.61) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.