Home / 2,208.11-3,311.96-747.09

Finding the Fourth Proportional to 2,208.11, 3,311.96 and 747.09

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Solution

The fourth proportional to 2,208.11, 3,311.96 and 747.09 is: 1,120.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,208.11 : 3,311.96 = 747.09 : x
  2. Step 2: Convert to fraction form
    2,208.11/3,311.96 = 747.09/x
  3. Step 3: Cross multiply
    2,208.11x = 3,311.96 × 747.09
  4. Step 4: Simplify right side
    2,208.11x = 2,474,328.46
  5. Step 5: Solve for x
    x = 2,474,328.46/2,208.11
  6. Step 6: Final answer
    x = 1,120.57

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1.5x scale

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.