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Finding the Fourth Proportional to 8,879.12, 13,321.82 and 3,948.32

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Solution

The fourth proportional to 8,879.12, 13,321.82 and 3,948.32 is: 5,923.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,879.12 : 13,321.82 = 3,948.32 : x
  2. Step 2: Convert to fraction form
    8,879.12/13,321.82 = 3,948.32/x
  3. Step 3: Cross multiply
    8,879.12x = 13,321.82 × 3,948.32
  4. Step 4: Simplify right side
    8,879.12x = 52,598,808.34
  5. Step 5: Solve for x
    x = 52,598,808.34/8,879.12
  6. Step 6: Final answer
    x = 5,923.88

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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.