Home / 5,399.12-8,080.32-3,423.80

Finding the Fourth Proportional to 5,399.12, 8,080.32 and 3,423.80

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Solution

The fourth proportional to 5,399.12, 8,080.32 and 3,423.80 is: 5,124.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,399.12 : 8,080.32 = 3,423.80 : x
  2. Step 2: Convert to fraction form
    5,399.12/8,080.32 = 3,423.80/x
  3. Step 3: Cross multiply
    5,399.12x = 8,080.32 × 3,423.80
  4. Step 4: Simplify right side
    5,399.12x = 27,665,399.62
  5. Step 5: Solve for x
    x = 27,665,399.62/5,399.12
  6. Step 6: Final answer
    x = 5,124.06

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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.