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Finding the Third Proportional to 3,139.50 and 8,540.63

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Solution

The third proportional to 3,139.50 and 8,540.63 is: 23,233.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.50 : 8,540.63 = 8,540.63 : x
  2. Step 2: Convert to fraction form
    3,139.50/8,540.63 = 8,540.63/x
  3. Step 3: Cross multiply
    3,139.50x = 8,540.63 × 8,540.63
  4. Step 4: Simplify right side
    3,139.50x = 72,942,275.39
  5. Step 5: Solve for x
    x = 72,942,275.39/3,139.50
  6. Step 6: Final answer
    x = 23,233.72

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Why These Related Problems?

These problems maintain the same ratio (2.72) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.