Home / 2,205.30-3,305.90-1,108.38

Finding the Fourth Proportional to 2,205.30, 3,305.90 and 1,108.38

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Solution

The fourth proportional to 2,205.30, 3,305.90 and 1,108.38 is: 1,661.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,205.30 : 3,305.90 = 1,108.38 : x
  2. Step 2: Convert to fraction form
    2,205.30/3,305.90 = 1,108.38/x
  3. Step 3: Cross multiply
    2,205.30x = 3,305.90 × 1,108.38
  4. Step 4: Simplify right side
    2,205.30x = 3,664,193.44
  5. Step 5: Solve for x
    x = 3,664,193.44/2,205.30
  6. Step 6: Final answer
    x = 1,661.54

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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.