Home / 3,981.14-5,489.12-3,441.80

Finding the Fourth Proportional to 3,981.14, 5,489.12 and 3,441.80

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Solution

The fourth proportional to 3,981.14, 5,489.12 and 3,441.80 is: 4,745.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,981.14 : 5,489.12 = 3,441.80 : x
  2. Step 2: Convert to fraction form
    3,981.14/5,489.12 = 3,441.80/x
  3. Step 3: Cross multiply
    3,981.14x = 5,489.12 × 3,441.80
  4. Step 4: Simplify right side
    3,981.14x = 18,892,453.22
  5. Step 5: Solve for x
    x = 18,892,453.22/3,981.14
  6. Step 6: Final answer
    x = 4,745.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.