Home / 3,929.20-5,424-2,600.56

Finding the Fourth Proportional to 3,929.20, 5,424 and 2,600.56

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Solution

The fourth proportional to 3,929.20, 5,424 and 2,600.56 is: 3,589.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,929.20 : 5,424 = 2,600.56 : x
  2. Step 2: Convert to fraction form
    3,929.20/5,424 = 2,600.56/x
  3. Step 3: Cross multiply
    3,929.20x = 5,424 × 2,600.56
  4. Step 4: Simplify right side
    3,929.20x = 14,105,437.44
  5. Step 5: Solve for x
    x = 14,105,437.44/3,929.20
  6. Step 6: Final answer
    x = 3,589.90

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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.