Home / 3,424.20-5,138.76-1,477.80

Finding the Fourth Proportional to 3,424.20, 5,138.76 and 1,477.80

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Solution

The fourth proportional to 3,424.20, 5,138.76 and 1,477.80 is: 2,217.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,424.20 : 5,138.76 = 1,477.80 : x
  2. Step 2: Convert to fraction form
    3,424.20/5,138.76 = 1,477.80/x
  3. Step 3: Cross multiply
    3,424.20x = 5,138.76 × 1,477.80
  4. Step 4: Simplify right side
    3,424.20x = 7,594,059.53
  5. Step 5: Solve for x
    x = 7,594,059.53/3,424.20
  6. Step 6: Final answer
    x = 2,217.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.