Home / 3,861.46-5,781.66-2,688.58

Finding the Fourth Proportional to 3,861.46, 5,781.66 and 2,688.58

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Solution

The fourth proportional to 3,861.46, 5,781.66 and 2,688.58 is: 4,025.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,861.46 : 5,781.66 = 2,688.58 : x
  2. Step 2: Convert to fraction form
    3,861.46/5,781.66 = 2,688.58/x
  3. Step 3: Cross multiply
    3,861.46x = 5,781.66 × 2,688.58
  4. Step 4: Simplify right side
    3,861.46x = 15,544,455.44
  5. Step 5: Solve for x
    x = 15,544,455.44/3,861.46
  6. Step 6: Final answer
    x = 4,025.54

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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.