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Finding the Fourth Proportional to 3,843.74, 5,304.48 and 2,520.92

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Solution

The fourth proportional to 3,843.74, 5,304.48 and 2,520.92 is: 3,478.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,843.74 : 5,304.48 = 2,520.92 : x
  2. Step 2: Convert to fraction form
    3,843.74/5,304.48 = 2,520.92/x
  3. Step 3: Cross multiply
    3,843.74x = 5,304.48 × 2,520.92
  4. Step 4: Simplify right side
    3,843.74x = 13,372,169.72
  5. Step 5: Solve for x
    x = 13,372,169.72/3,843.74
  6. Step 6: Final answer
    x = 3,478.95

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.