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Finding the Fourth Proportional to 3,847.61, 5,771.16 and 1,074.67

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Solution

The fourth proportional to 3,847.61, 5,771.16 and 1,074.67 is: 1,611.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,847.61 : 5,771.16 = 1,074.67 : x
  2. Step 2: Convert to fraction form
    3,847.61/5,771.16 = 1,074.67/x
  3. Step 3: Cross multiply
    3,847.61x = 5,771.16 × 1,074.67
  4. Step 4: Simplify right side
    3,847.61x = 6,202,092.52
  5. Step 5: Solve for x
    x = 6,202,092.52/3,847.61
  6. Step 6: Final answer
    x = 1,611.93

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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.