Home / 3,511.18-5,269.49-1,321.90

Finding the Fourth Proportional to 3,511.18, 5,269.49 and 1,321.90

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Solution

The fourth proportional to 3,511.18, 5,269.49 and 1,321.90 is: 1,983.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,511.18 : 5,269.49 = 1,321.90 : x
  2. Step 2: Convert to fraction form
    3,511.18/5,269.49 = 1,321.90/x
  3. Step 3: Cross multiply
    3,511.18x = 5,269.49 × 1,321.90
  4. Step 4: Simplify right side
    3,511.18x = 6,965,738.83
  5. Step 5: Solve for x
    x = 6,965,738.83/3,511.18
  6. Step 6: Final answer
    x = 1,983.87

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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.