Home / 3,912.96-5,400.60-2,340.72

Finding the Fourth Proportional to 3,912.96, 5,400.60 and 2,340.72

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Solution

The fourth proportional to 3,912.96, 5,400.60 and 2,340.72 is: 3,230.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,912.96 : 5,400.60 = 2,340.72 : x
  2. Step 2: Convert to fraction form
    3,912.96/5,400.60 = 2,340.72/x
  3. Step 3: Cross multiply
    3,912.96x = 5,400.60 × 2,340.72
  4. Step 4: Simplify right side
    3,912.96x = 12,641,292.43
  5. Step 5: Solve for x
    x = 12,641,292.43/3,912.96
  6. Step 6: Final answer
    x = 3,230.62

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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.