Home / 2,208.85-3,311.89-1,038.11

Finding the Fourth Proportional to 2,208.85, 3,311.89 and 1,038.11

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Solution

The fourth proportional to 2,208.85, 3,311.89 and 1,038.11 is: 1,556.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,208.85 : 3,311.89 = 1,038.11 : x
  2. Step 2: Convert to fraction form
    2,208.85/3,311.89 = 1,038.11/x
  3. Step 3: Cross multiply
    2,208.85x = 3,311.89 × 1,038.11
  4. Step 4: Simplify right side
    2,208.85x = 3,438,086.97
  5. Step 5: Solve for x
    x = 3,438,086.97/2,208.85
  6. Step 6: Final answer
    x = 1,556.51

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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.