Home / 3,912.52-5,399.78-2,340.68

Finding the Fourth Proportional to 3,912.52, 5,399.78 and 2,340.68

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Solution

The fourth proportional to 3,912.52, 5,399.78 and 2,340.68 is: 3,230.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,912.52 : 5,399.78 = 2,340.68 : x
  2. Step 2: Convert to fraction form
    3,912.52/5,399.78 = 2,340.68/x
  3. Step 3: Cross multiply
    3,912.52x = 5,399.78 × 2,340.68
  4. Step 4: Simplify right side
    3,912.52x = 12,639,157.05
  5. Step 5: Solve for x
    x = 12,639,157.05/3,912.52
  6. Step 6: Final answer
    x = 3,230.44

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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.