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Finding the Fourth Proportional to 8,151.96, 12,231.18 and 3,771.48

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Solution

The fourth proportional to 8,151.96, 12,231.18 and 3,771.48 is: 5,658.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,151.96 : 12,231.18 = 3,771.48 : x
  2. Step 2: Convert to fraction form
    8,151.96/12,231.18 = 3,771.48/x
  3. Step 3: Cross multiply
    8,151.96x = 12,231.18 × 3,771.48
  4. Step 4: Simplify right side
    8,151.96x = 46,129,650.75
  5. Step 5: Solve for x
    x = 46,129,650.75/8,151.96
  6. Step 6: Final answer
    x = 5,658.72

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1.5x scale

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.