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Finding the Fourth Proportional to 3,811.53, 5,718.17 and 1,471.55

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Solution

The fourth proportional to 3,811.53, 5,718.17 and 1,471.55 is: 2,207.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,811.53 : 5,718.17 = 1,471.55 : x
  2. Step 2: Convert to fraction form
    3,811.53/5,718.17 = 1,471.55/x
  3. Step 3: Cross multiply
    3,811.53x = 5,718.17 × 1,471.55
  4. Step 4: Simplify right side
    3,811.53x = 8,414,600.30
  5. Step 5: Solve for x
    x = 8,414,600.30/3,811.53
  6. Step 6: Final answer
    x = 2,207.67

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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.