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Finding the Fourth Proportional to 3,891.27, 5,835.85 and 1,293.87

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Solution

The fourth proportional to 3,891.27, 5,835.85 and 1,293.87 is: 1,940.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,891.27 : 5,835.85 = 1,293.87 : x
  2. Step 2: Convert to fraction form
    3,891.27/5,835.85 = 1,293.87/x
  3. Step 3: Cross multiply
    3,891.27x = 5,835.85 × 1,293.87
  4. Step 4: Simplify right side
    3,891.27x = 7,550,824.77
  5. Step 5: Solve for x
    x = 7,550,824.77/3,891.27
  6. Step 6: Final answer
    x = 1,940.45

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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.