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Finding the Third Proportional to 3,105.31 and 4,615.75

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Solution

The third proportional to 3,105.31 and 4,615.75 is: 6,860.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,105.31 : 4,615.75 = 4,615.75 : x
  2. Step 2: Convert to fraction form
    3,105.31/4,615.75 = 4,615.75/x
  3. Step 3: Cross multiply
    3,105.31x = 4,615.75 × 4,615.75
  4. Step 4: Simplify right side
    3,105.31x = 21,305,148.06
  5. Step 5: Solve for x
    x = 21,305,148.06/3,105.31
  6. Step 6: Final answer
    x = 6,860.87

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.