Home / 3,861.96-5,329.44-3,147.72

Finding the Fourth Proportional to 3,861.96, 5,329.44 and 3,147.72

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Solution

The fourth proportional to 3,861.96, 5,329.44 and 3,147.72 is: 4,343.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,861.96 : 5,329.44 = 3,147.72 : x
  2. Step 2: Convert to fraction form
    3,861.96/5,329.44 = 3,147.72/x
  3. Step 3: Cross multiply
    3,861.96x = 5,329.44 × 3,147.72
  4. Step 4: Simplify right side
    3,861.96x = 16,775,584.88
  5. Step 5: Solve for x
    x = 16,775,584.88/3,861.96
  6. Step 6: Final answer
    x = 4,343.80

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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.