Home / 8,081.96-12,105.18-6,679.40

Finding the Fourth Proportional to 8,081.96, 12,105.18 and 6,679.40

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Solution

The fourth proportional to 8,081.96, 12,105.18 and 6,679.40 is: 10,004.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,081.96 : 12,105.18 = 6,679.40 : x
  2. Step 2: Convert to fraction form
    8,081.96/12,105.18 = 6,679.40/x
  3. Step 3: Cross multiply
    8,081.96x = 12,105.18 × 6,679.40
  4. Step 4: Simplify right side
    8,081.96x = 80,855,339.29
  5. Step 5: Solve for x
    x = 80,855,339.29/8,081.96
  6. Step 6: Final answer
    x = 10,004.42

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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.