Home / 3,489.20-5,244.60-3,424.40

Finding the Fourth Proportional to 3,489.20, 5,244.60 and 3,424.40

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Solution

The fourth proportional to 3,489.20, 5,244.60 and 3,424.40 is: 5,147.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,489.20 : 5,244.60 = 3,424.40 : x
  2. Step 2: Convert to fraction form
    3,489.20/5,244.60 = 3,424.40/x
  3. Step 3: Cross multiply
    3,489.20x = 5,244.60 × 3,424.40
  4. Step 4: Simplify right side
    3,489.20x = 17,959,608.24
  5. Step 5: Solve for x
    x = 17,959,608.24/3,489.20
  6. Step 6: Final answer
    x = 5,147.20

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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.