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Finding the Fourth Proportional to 2,939.76, 4,399.92 and 1,841.76

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Solution

The fourth proportional to 2,939.76, 4,399.92 and 1,841.76 is: 2,756.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,939.76 : 4,399.92 = 1,841.76 : x
  2. Step 2: Convert to fraction form
    2,939.76/4,399.92 = 1,841.76/x
  3. Step 3: Cross multiply
    2,939.76x = 4,399.92 × 1,841.76
  4. Step 4: Simplify right side
    2,939.76x = 8,103,596.66
  5. Step 5: Solve for x
    x = 8,103,596.66/2,939.76
  6. Step 6: Final answer
    x = 2,756.55

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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.