Home / 2,201.19-3,298.80-813.22

Finding the Fourth Proportional to 2,201.19, 3,298.80 and 813.22

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Solution

The fourth proportional to 2,201.19, 3,298.80 and 813.22 is: 1,218.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,201.19 : 3,298.80 = 813.22 : x
  2. Step 2: Convert to fraction form
    2,201.19/3,298.80 = 813.22/x
  3. Step 3: Cross multiply
    2,201.19x = 3,298.80 × 813.22
  4. Step 4: Simplify right side
    2,201.19x = 2,682,650.14
  5. Step 5: Solve for x
    x = 2,682,650.14/2,201.19
  6. Step 6: Final answer
    x = 1,218.73

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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.