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Finding the Fourth Proportional to 6,128.92, 8,452.92 and 3,770.20

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Solution

The fourth proportional to 6,128.92, 8,452.92 and 3,770.20 is: 5,199.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,128.92 : 8,452.92 = 3,770.20 : x
  2. Step 2: Convert to fraction form
    6,128.92/8,452.92 = 3,770.20/x
  3. Step 3: Cross multiply
    6,128.92x = 8,452.92 × 3,770.20
  4. Step 4: Simplify right side
    6,128.92x = 31,869,198.98
  5. Step 5: Solve for x
    x = 31,869,198.98/6,128.92
  6. Step 6: Final answer
    x = 5,199.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.