Home / 8,108.18-12,163.52-3,428.20

Finding the Fourth Proportional to 8,108.18, 12,163.52 and 3,428.20

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Solution

The fourth proportional to 8,108.18, 12,163.52 and 3,428.20 is: 5,142.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,108.18 : 12,163.52 = 3,428.20 : x
  2. Step 2: Convert to fraction form
    8,108.18/12,163.52 = 3,428.20/x
  3. Step 3: Cross multiply
    8,108.18x = 12,163.52 × 3,428.20
  4. Step 4: Simplify right side
    8,108.18x = 41,699,003.04
  5. Step 5: Solve for x
    x = 41,699,003.04/8,108.18
  6. Step 6: Final answer
    x = 5,142.83

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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.