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Finding the Third Proportional to 2,791.31 and 6,140.63

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Solution

The third proportional to 2,791.31 and 6,140.63 is: 13,508.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,791.31 : 6,140.63 = 6,140.63 : x
  2. Step 2: Convert to fraction form
    2,791.31/6,140.63 = 6,140.63/x
  3. Step 3: Cross multiply
    2,791.31x = 6,140.63 × 6,140.63
  4. Step 4: Simplify right side
    2,791.31x = 37,707,275.39
  5. Step 5: Solve for x
    x = 37,707,275.39/2,791.31
  6. Step 6: Final answer
    x = 13,508.80

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.