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Finding the Fourth Proportional to 3,502.88, 5,255.76 and 1,942.64

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Solution

The fourth proportional to 3,502.88, 5,255.76 and 1,942.64 is: 2,914.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,502.88 : 5,255.76 = 1,942.64 : x
  2. Step 2: Convert to fraction form
    3,502.88/5,255.76 = 1,942.64/x
  3. Step 3: Cross multiply
    3,502.88x = 5,255.76 × 1,942.64
  4. Step 4: Simplify right side
    3,502.88x = 10,210,049.61
  5. Step 5: Solve for x
    x = 10,210,049.61/3,502.88
  6. Step 6: Final answer
    x = 2,914.76

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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.