Home / 3,972.20-5,478.91-2,922.44

Finding the Fourth Proportional to 3,972.20, 5,478.91 and 2,922.44

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Solution

The fourth proportional to 3,972.20, 5,478.91 and 2,922.44 is: 4,030.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,972.20 : 5,478.91 = 2,922.44 : x
  2. Step 2: Convert to fraction form
    3,972.20/5,478.91 = 2,922.44/x
  3. Step 3: Cross multiply
    3,972.20x = 5,478.91 × 2,922.44
  4. Step 4: Simplify right side
    3,972.20x = 16,011,751.04
  5. Step 5: Solve for x
    x = 16,011,751.04/3,972.20
  6. Step 6: Final answer
    x = 4,030.96

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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.