Home / 4,120.20-5,682.96-2,861.46

Finding the Fourth Proportional to 4,120.20, 5,682.96 and 2,861.46

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Solution

The fourth proportional to 4,120.20, 5,682.96 and 2,861.46 is: 3,946.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,120.20 : 5,682.96 = 2,861.46 : x
  2. Step 2: Convert to fraction form
    4,120.20/5,682.96 = 2,861.46/x
  3. Step 3: Cross multiply
    4,120.20x = 5,682.96 × 2,861.46
  4. Step 4: Simplify right side
    4,120.20x = 16,261,562.72
  5. Step 5: Solve for x
    x = 16,261,562.72/4,120.20
  6. Step 6: Final answer
    x = 3,946.79

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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.