Home / 3,992.20-5,509.23-2,223.96

Finding the Fourth Proportional to 3,992.20, 5,509.23 and 2,223.96

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Solution

The fourth proportional to 3,992.20, 5,509.23 and 2,223.96 is: 3,069.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,992.20 : 5,509.23 = 2,223.96 : x
  2. Step 2: Convert to fraction form
    3,992.20/5,509.23 = 2,223.96/x
  3. Step 3: Cross multiply
    3,992.20x = 5,509.23 × 2,223.96
  4. Step 4: Simplify right side
    3,992.20x = 12,252,307.15
  5. Step 5: Solve for x
    x = 12,252,307.15/3,992.20
  6. Step 6: Final answer
    x = 3,069.06

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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.