Home / 5,439.90-8,162.73-2,320.38

Finding the Fourth Proportional to 5,439.90, 8,162.73 and 2,320.38

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Solution

The fourth proportional to 5,439.90, 8,162.73 and 2,320.38 is: 3,481.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,439.90 : 8,162.73 = 2,320.38 : x
  2. Step 2: Convert to fraction form
    5,439.90/8,162.73 = 2,320.38/x
  3. Step 3: Cross multiply
    5,439.90x = 8,162.73 × 2,320.38
  4. Step 4: Simplify right side
    5,439.90x = 18,940,635.44
  5. Step 5: Solve for x
    x = 18,940,635.44/5,439.90
  6. Step 6: Final answer
    x = 3,481.80

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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.