Home / 9,108.20-13,655.10-3,909.80

Finding the Fourth Proportional to 9,108.20, 13,655.10 and 3,909.80

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Solution

The fourth proportional to 9,108.20, 13,655.10 and 3,909.80 is: 5,861.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,108.20 : 13,655.10 = 3,909.80 : x
  2. Step 2: Convert to fraction form
    9,108.20/13,655.10 = 3,909.80/x
  3. Step 3: Cross multiply
    9,108.20x = 13,655.10 × 3,909.80
  4. Step 4: Simplify right side
    9,108.20x = 53,388,709.98
  5. Step 5: Solve for x
    x = 53,388,709.98/9,108.20
  6. Step 6: Final answer
    x = 5,861.61

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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.