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Finding the Third Proportional to 6,240.75 and 6,780.75

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Solution

The third proportional to 6,240.75 and 6,780.75 is: 7,367.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,240.75 : 6,780.75 = 6,780.75 : x
  2. Step 2: Convert to fraction form
    6,240.75/6,780.75 = 6,780.75/x
  3. Step 3: Cross multiply
    6,240.75x = 6,780.75 × 6,780.75
  4. Step 4: Simplify right side
    6,240.75x = 45,978,570.56
  5. Step 5: Solve for x
    x = 45,978,570.56/6,240.75
  6. Step 6: Final answer
    x = 7,367.48

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Why These Related Problems?

These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.