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Finding the Third Proportional to 1,540.31 and 3,378.75

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Solution

The third proportional to 1,540.31 and 3,378.75 is: 7,411.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,540.31 : 3,378.75 = 3,378.75 : x
  2. Step 2: Convert to fraction form
    1,540.31/3,378.75 = 3,378.75/x
  3. Step 3: Cross multiply
    1,540.31x = 3,378.75 × 3,378.75
  4. Step 4: Simplify right side
    1,540.31x = 11,415,951.56
  5. Step 5: Solve for x
    x = 11,415,951.56/1,540.31
  6. Step 6: Final answer
    x = 7,411.45

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.