Home / 8,982.15-13,440.41-5,286.12

Finding the Fourth Proportional to 8,982.15, 13,440.41 and 5,286.12

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Solution

The fourth proportional to 8,982.15, 13,440.41 and 5,286.12 is: 7,909.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,982.15 : 13,440.41 = 5,286.12 : x
  2. Step 2: Convert to fraction form
    8,982.15/13,440.41 = 5,286.12/x
  3. Step 3: Cross multiply
    8,982.15x = 13,440.41 × 5,286.12
  4. Step 4: Simplify right side
    8,982.15x = 71,047,620.11
  5. Step 5: Solve for x
    x = 71,047,620.11/8,982.15
  6. Step 6: Final answer
    x = 7,909.87

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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.