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Finding the Fourth Proportional to 3,399.20, 5,089.20 and 3,053.60

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Solution

The fourth proportional to 3,399.20, 5,089.20 and 3,053.60 is: 4,571.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,399.20 : 5,089.20 = 3,053.60 : x
  2. Step 2: Convert to fraction form
    3,399.20/5,089.20 = 3,053.60/x
  3. Step 3: Cross multiply
    3,399.20x = 5,089.20 × 3,053.60
  4. Step 4: Simplify right side
    3,399.20x = 15,540,381.12
  5. Step 5: Solve for x
    x = 15,540,381.12/3,399.20
  6. Step 6: Final answer
    x = 4,571.78

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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.