Home / 3,942.24-5,440.32-2,449.68

Finding the Fourth Proportional to 3,942.24, 5,440.32 and 2,449.68

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Solution

The fourth proportional to 3,942.24, 5,440.32 and 2,449.68 is: 3,380.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,942.24 : 5,440.32 = 2,449.68 : x
  2. Step 2: Convert to fraction form
    3,942.24/5,440.32 = 2,449.68/x
  3. Step 3: Cross multiply
    3,942.24x = 5,440.32 × 2,449.68
  4. Step 4: Simplify right side
    3,942.24x = 13,327,043.10
  5. Step 5: Solve for x
    x = 13,327,043.10/3,942.24
  6. Step 6: Final answer
    x = 3,380.58

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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.