Home / 3,992.31-5,509.43-2,223.95

Finding the Fourth Proportional to 3,992.31, 5,509.43 and 2,223.95

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Solution

The fourth proportional to 3,992.31, 5,509.43 and 2,223.95 is: 3,069.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,992.31 : 5,509.43 = 2,223.95 : x
  2. Step 2: Convert to fraction form
    3,992.31/5,509.43 = 2,223.95/x
  3. Step 3: Cross multiply
    3,992.31x = 5,509.43 × 2,223.95
  4. Step 4: Simplify right side
    3,992.31x = 12,252,696.85
  5. Step 5: Solve for x
    x = 12,252,696.85/3,992.31
  6. Step 6: Final answer
    x = 3,069.07

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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.