Home / 5,389.92-8,086.20-1,879.44

Finding the Fourth Proportional to 5,389.92, 8,086.20 and 1,879.44

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Solution

The fourth proportional to 5,389.92, 8,086.20 and 1,879.44 is: 2,819.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,389.92 : 8,086.20 = 1,879.44 : x
  2. Step 2: Convert to fraction form
    5,389.92/8,086.20 = 1,879.44/x
  3. Step 3: Cross multiply
    5,389.92x = 8,086.20 × 1,879.44
  4. Step 4: Simplify right side
    5,389.92x = 15,197,527.73
  5. Step 5: Solve for x
    x = 15,197,527.73/5,389.92
  6. Step 6: Final answer
    x = 2,819.62

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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.