Home / 3,912.09-5,398.74-2,339.88

Finding the Fourth Proportional to 3,912.09, 5,398.74 and 2,339.88

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Solution

The fourth proportional to 3,912.09, 5,398.74 and 2,339.88 is: 3,229.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,912.09 : 5,398.74 = 2,339.88 : x
  2. Step 2: Convert to fraction form
    3,912.09/5,398.74 = 2,339.88/x
  3. Step 3: Cross multiply
    3,912.09x = 5,398.74 × 2,339.88
  4. Step 4: Simplify right side
    3,912.09x = 12,632,403.75
  5. Step 5: Solve for x
    x = 12,632,403.75/3,912.09
  6. Step 6: Final answer
    x = 3,229.07

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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.