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Finding the Fourth Proportional to 2,747.79, 4,115.46 and 2,255.73

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Solution

The fourth proportional to 2,747.79, 4,115.46 and 2,255.73 is: 3,378.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,747.79 : 4,115.46 = 2,255.73 : x
  2. Step 2: Convert to fraction form
    2,747.79/4,115.46 = 2,255.73/x
  3. Step 3: Cross multiply
    2,747.79x = 4,115.46 × 2,255.73
  4. Step 4: Simplify right side
    2,747.79x = 9,283,366.59
  5. Step 5: Solve for x
    x = 9,283,366.59/2,747.79
  6. Step 6: Final answer
    x = 3,378.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.