Home / 1,998.09-2,757.32-1,101.86

Finding the Fourth Proportional to 1,998.09, 2,757.32 and 1,101.86

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Solution

The fourth proportional to 1,998.09, 2,757.32 and 1,101.86 is: 1,520.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,998.09 : 2,757.32 = 1,101.86 : x
  2. Step 2: Convert to fraction form
    1,998.09/2,757.32 = 1,101.86/x
  3. Step 3: Cross multiply
    1,998.09x = 2,757.32 × 1,101.86
  4. Step 4: Simplify right side
    1,998.09x = 3,038,180.62
  5. Step 5: Solve for x
    x = 3,038,180.62/1,998.09
  6. Step 6: Final answer
    x = 1,520.54

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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.