Home / 3,992.20-5,509.27-2,223.82

Finding the Fourth Proportional to 3,992.20, 5,509.27 and 2,223.82

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Solution

The fourth proportional to 3,992.20, 5,509.27 and 2,223.82 is: 3,068.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,992.20 : 5,509.27 = 2,223.82 : x
  2. Step 2: Convert to fraction form
    3,992.20/5,509.27 = 2,223.82/x
  3. Step 3: Cross multiply
    3,992.20x = 5,509.27 × 2,223.82
  4. Step 4: Simplify right side
    3,992.20x = 12,251,621.97
  5. Step 5: Solve for x
    x = 12,251,621.97/3,992.20
  6. Step 6: Final answer
    x = 3,068.89

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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.