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Finding the Fourth Proportional to 3,861.96, 5,789.35 and 2,104.39

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Solution

The fourth proportional to 3,861.96, 5,789.35 and 2,104.39 is: 3,154.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,861.96 : 5,789.35 = 2,104.39 : x
  2. Step 2: Convert to fraction form
    3,861.96/5,789.35 = 2,104.39/x
  3. Step 3: Cross multiply
    3,861.96x = 5,789.35 × 2,104.39
  4. Step 4: Simplify right side
    3,861.96x = 12,183,050.25
  5. Step 5: Solve for x
    x = 12,183,050.25/3,861.96
  6. Step 6: Final answer
    x = 3,154.63

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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.