Home / 2,208.16-3,311.70-747.28

Finding the Fourth Proportional to 2,208.16, 3,311.70 and 747.28

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Solution

The fourth proportional to 2,208.16, 3,311.70 and 747.28 is: 1,120.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,208.16 : 3,311.70 = 747.28 : x
  2. Step 2: Convert to fraction form
    2,208.16/3,311.70 = 747.28/x
  3. Step 3: Cross multiply
    2,208.16x = 3,311.70 × 747.28
  4. Step 4: Simplify right side
    2,208.16x = 2,474,767.18
  5. Step 5: Solve for x
    x = 2,474,767.18/2,208.16
  6. Step 6: Final answer
    x = 1,120.74

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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.