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Finding the Fourth Proportional to 3,449.78, 4,760.78 and 1,877.90

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Solution

The fourth proportional to 3,449.78, 4,760.78 and 1,877.90 is: 2,591.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,449.78 : 4,760.78 = 1,877.90 : x
  2. Step 2: Convert to fraction form
    3,449.78/4,760.78 = 1,877.90/x
  3. Step 3: Cross multiply
    3,449.78x = 4,760.78 × 1,877.90
  4. Step 4: Simplify right side
    3,449.78x = 8,940,268.76
  5. Step 5: Solve for x
    x = 8,940,268.76/3,449.78
  6. Step 6: Final answer
    x = 2,591.55

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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.