Home / 3,927.60-5,912.82-3,391.92

Finding the Fourth Proportional to 3,927.60, 5,912.82 and 3,391.92

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Solution

The fourth proportional to 3,927.60, 5,912.82 and 3,391.92 is: 5,106.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,927.60 : 5,912.82 = 3,391.92 : x
  2. Step 2: Convert to fraction form
    3,927.60/5,912.82 = 3,391.92/x
  3. Step 3: Cross multiply
    3,927.60x = 5,912.82 × 3,391.92
  4. Step 4: Simplify right side
    3,927.60x = 20,055,812.41
  5. Step 5: Solve for x
    x = 20,055,812.41/3,927.60
  6. Step 6: Final answer
    x = 5,106.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.