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Finding the Third Proportional to 6,139.13 and 8,712.56

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Solution

The third proportional to 6,139.13 and 8,712.56 is: 12,364.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,139.13 : 8,712.56 = 8,712.56 : x
  2. Step 2: Convert to fraction form
    6,139.13/8,712.56 = 8,712.56/x
  3. Step 3: Cross multiply
    6,139.13x = 8,712.56 × 8,712.56
  4. Step 4: Simplify right side
    6,139.13x = 75,908,745.32
  5. Step 5: Solve for x
    x = 75,908,745.32/6,139.13
  6. Step 6: Final answer
    x = 12,364.75

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Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.