Home / 5,400.12-8,081.82-3,424.80

Finding the Fourth Proportional to 5,400.12, 8,081.82 and 3,424.80

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Solution

The fourth proportional to 5,400.12, 8,081.82 and 3,424.80 is: 5,125.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,400.12 : 8,081.82 = 3,424.80 : x
  2. Step 2: Convert to fraction form
    5,400.12/8,081.82 = 3,424.80/x
  3. Step 3: Cross multiply
    5,400.12x = 8,081.82 × 3,424.80
  4. Step 4: Simplify right side
    5,400.12x = 27,678,617.14
  5. Step 5: Solve for x
    x = 27,678,617.14/5,400.12
  6. Step 6: Final answer
    x = 5,125.56

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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.