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Finding the Fourth Proportional to 11,838.76, 17,758.05 and 3,941.86

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Solution

The fourth proportional to 11,838.76, 17,758.05 and 3,941.86 is: 5,912.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,838.76 : 17,758.05 = 3,941.86 : x
  2. Step 2: Convert to fraction form
    11,838.76/17,758.05 = 3,941.86/x
  3. Step 3: Cross multiply
    11,838.76x = 17,758.05 × 3,941.86
  4. Step 4: Simplify right side
    11,838.76x = 69,999,746.97
  5. Step 5: Solve for x
    x = 69,999,746.97/11,838.76
  6. Step 6: Final answer
    x = 5,912.76

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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.