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Finding the Third Proportional to 4,040.72 and 6,240.80

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Solution

The third proportional to 4,040.72 and 6,240.80 is: 9,638.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,040.72 : 6,240.80 = 6,240.80 : x
  2. Step 2: Convert to fraction form
    4,040.72/6,240.80 = 6,240.80/x
  3. Step 3: Cross multiply
    4,040.72x = 6,240.80 × 6,240.80
  4. Step 4: Simplify right side
    4,040.72x = 38,947,545.64
  5. Step 5: Solve for x
    x = 38,947,545.64/4,040.72
  6. Step 6: Final answer
    x = 9,638.77

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.