Home / 5,409.62-8,115.27-2,289.64

Finding the Fourth Proportional to 5,409.62, 8,115.27 and 2,289.64

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Solution

The fourth proportional to 5,409.62, 8,115.27 and 2,289.64 is: 3,434.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,409.62 : 8,115.27 = 2,289.64 : x
  2. Step 2: Convert to fraction form
    5,409.62/8,115.27 = 2,289.64/x
  3. Step 3: Cross multiply
    5,409.62x = 8,115.27 × 2,289.64
  4. Step 4: Simplify right side
    5,409.62x = 18,581,046.80
  5. Step 5: Solve for x
    x = 18,581,046.80/5,409.62
  6. Step 6: Final answer
    x = 3,434.82

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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.