Home / 3,992.20-5,504.22-3,431.56

Finding the Fourth Proportional to 3,992.20, 5,504.22 and 3,431.56

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Solution

The fourth proportional to 3,992.20, 5,504.22 and 3,431.56 is: 4,731.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,992.20 : 5,504.22 = 3,431.56 : x
  2. Step 2: Convert to fraction form
    3,992.20/5,504.22 = 3,431.56/x
  3. Step 3: Cross multiply
    3,992.20x = 5,504.22 × 3,431.56
  4. Step 4: Simplify right side
    3,992.20x = 18,888,061.18
  5. Step 5: Solve for x
    x = 18,888,061.18/3,992.20
  6. Step 6: Final answer
    x = 4,731.24

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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.