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Finding the Fourth Proportional to 3,908.76, 5,861.72 and 1,134.68

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Solution

The fourth proportional to 3,908.76, 5,861.72 and 1,134.68 is: 1,701.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,908.76 : 5,861.72 = 1,134.68 : x
  2. Step 2: Convert to fraction form
    3,908.76/5,861.72 = 1,134.68/x
  3. Step 3: Cross multiply
    3,908.76x = 5,861.72 × 1,134.68
  4. Step 4: Simplify right side
    3,908.76x = 6,651,176.45
  5. Step 5: Solve for x
    x = 6,651,176.45/3,908.76
  6. Step 6: Final answer
    x = 1,701.61

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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.