Home / 4,021.68-5,575.62-3,879.12

Finding the Fourth Proportional to 4,021.68, 5,575.62 and 3,879.12

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Solution

The fourth proportional to 4,021.68, 5,575.62 and 3,879.12 is: 5,377.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,021.68 : 5,575.62 = 3,879.12 : x
  2. Step 2: Convert to fraction form
    4,021.68/5,575.62 = 3,879.12/x
  3. Step 3: Cross multiply
    4,021.68x = 5,575.62 × 3,879.12
  4. Step 4: Simplify right side
    4,021.68x = 21,628,499.05
  5. Step 5: Solve for x
    x = 21,628,499.05/4,021.68
  6. Step 6: Final answer
    x = 5,377.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.