Home / 9,138.92-13,680.42-5,855.18

Finding the Fourth Proportional to 9,138.92, 13,680.42 and 5,855.18

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Solution

The fourth proportional to 9,138.92, 13,680.42 and 5,855.18 is: 8,764.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,138.92 : 13,680.42 = 5,855.18 : x
  2. Step 2: Convert to fraction form
    9,138.92/13,680.42 = 5,855.18/x
  3. Step 3: Cross multiply
    9,138.92x = 13,680.42 × 5,855.18
  4. Step 4: Simplify right side
    9,138.92x = 80,101,321.58
  5. Step 5: Solve for x
    x = 80,101,321.58/9,138.92
  6. Step 6: Final answer
    x = 8,764.86

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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.