Home / 3,469.20-5,198.34-1,388.22

Finding the Fourth Proportional to 3,469.20, 5,198.34 and 1,388.22

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Solution

The fourth proportional to 3,469.20, 5,198.34 and 1,388.22 is: 2,080.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,469.20 : 5,198.34 = 1,388.22 : x
  2. Step 2: Convert to fraction form
    3,469.20/5,198.34 = 1,388.22/x
  3. Step 3: Cross multiply
    3,469.20x = 5,198.34 × 1,388.22
  4. Step 4: Simplify right side
    3,469.20x = 7,216,439.55
  5. Step 5: Solve for x
    x = 7,216,439.55/3,469.20
  6. Step 6: Final answer
    x = 2,080.15

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1.5x scale

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.