Home / 3,321.35-4,982.26-1,129.80

Finding the Fourth Proportional to 3,321.35, 4,982.26 and 1,129.80

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Solution

The fourth proportional to 3,321.35, 4,982.26 and 1,129.80 is: 1,694.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,321.35 : 4,982.26 = 1,129.80 : x
  2. Step 2: Convert to fraction form
    3,321.35/4,982.26 = 1,129.80/x
  3. Step 3: Cross multiply
    3,321.35x = 4,982.26 × 1,129.80
  4. Step 4: Simplify right side
    3,321.35x = 5,628,947.30
  5. Step 5: Solve for x
    x = 5,628,947.30/3,321.35
  6. Step 6: Final answer
    x = 1,694.77

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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.