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Finding the Fourth Proportional to 3,478.52, 4,801.86 and 2,081

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Solution

The fourth proportional to 3,478.52, 4,801.86 and 2,081 is: 2,872.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,478.52 : 4,801.86 = 2,081 : x
  2. Step 2: Convert to fraction form
    3,478.52/4,801.86 = 2,081/x
  3. Step 3: Cross multiply
    3,478.52x = 4,801.86 × 2,081
  4. Step 4: Simplify right side
    3,478.52x = 9,992,670.66
  5. Step 5: Solve for x
    x = 9,992,670.66/3,478.52
  6. Step 6: Final answer
    x = 2,872.68

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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.