Home / 5,439.40-8,163.20-3,982.32

Finding the Fourth Proportional to 5,439.40, 8,163.20 and 3,982.32

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Solution

The fourth proportional to 5,439.40, 8,163.20 and 3,982.32 is: 5,976.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,439.40 : 8,163.20 = 3,982.32 : x
  2. Step 2: Convert to fraction form
    5,439.40/8,163.20 = 3,982.32/x
  3. Step 3: Cross multiply
    5,439.40x = 8,163.20 × 3,982.32
  4. Step 4: Simplify right side
    5,439.40x = 32,508,474.62
  5. Step 5: Solve for x
    x = 32,508,474.62/5,439.40
  6. Step 6: Final answer
    x = 5,976.48

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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.