Home / 3,455.31-5,183.78-1,375.43

Finding the Fourth Proportional to 3,455.31, 5,183.78 and 1,375.43

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Solution

The fourth proportional to 3,455.31, 5,183.78 and 1,375.43 is: 2,063.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,455.31 : 5,183.78 = 1,375.43 : x
  2. Step 2: Convert to fraction form
    3,455.31/5,183.78 = 1,375.43/x
  3. Step 3: Cross multiply
    3,455.31x = 5,183.78 × 1,375.43
  4. Step 4: Simplify right side
    3,455.31x = 7,129,919.65
  5. Step 5: Solve for x
    x = 7,129,919.65/3,455.31
  6. Step 6: Final answer
    x = 2,063.47

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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.