Home / 3,399.55-5,105.40-3,290.20

Finding the Fourth Proportional to 3,399.55, 5,105.40 and 3,290.20

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Solution

The fourth proportional to 3,399.55, 5,105.40 and 3,290.20 is: 4,941.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,399.55 : 5,105.40 = 3,290.20 : x
  2. Step 2: Convert to fraction form
    3,399.55/5,105.40 = 3,290.20/x
  3. Step 3: Cross multiply
    3,399.55x = 5,105.40 × 3,290.20
  4. Step 4: Simplify right side
    3,399.55x = 16,797,787.08
  5. Step 5: Solve for x
    x = 16,797,787.08/3,399.55
  6. Step 6: Final answer
    x = 4,941.18

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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.