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Finding the Fourth Proportional to 8,879.91, 13,321.49 and 4,439.90

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Solution

The fourth proportional to 8,879.91, 13,321.49 and 4,439.90 is: 6,660.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,879.91 : 13,321.49 = 4,439.90 : x
  2. Step 2: Convert to fraction form
    8,879.91/13,321.49 = 4,439.90/x
  3. Step 3: Cross multiply
    8,879.91x = 13,321.49 × 4,439.90
  4. Step 4: Simplify right side
    8,879.91x = 59,145,994.64
  5. Step 5: Solve for x
    x = 59,145,994.64/8,879.91
  6. Step 6: Final answer
    x = 6,660.65

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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.