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Finding the Fourth Proportional to 3,449.86, 4,760.71 and 1,957.78

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Solution

The fourth proportional to 3,449.86, 4,760.71 and 1,957.78 is: 2,701.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,449.86 : 4,760.71 = 1,957.78 : x
  2. Step 2: Convert to fraction form
    3,449.86/4,760.71 = 1,957.78/x
  3. Step 3: Cross multiply
    3,449.86x = 4,760.71 × 1,957.78
  4. Step 4: Simplify right side
    3,449.86x = 9,320,422.82
  5. Step 5: Solve for x
    x = 9,320,422.82/3,449.86
  6. Step 6: Final answer
    x = 2,701.68

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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.