Home / 5,631.87-8,441.97-2,121.19

Finding the Fourth Proportional to 5,631.87, 8,441.97 and 2,121.19

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Solution

The fourth proportional to 5,631.87, 8,441.97 and 2,121.19 is: 3,179.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,631.87 : 8,441.97 = 2,121.19 : x
  2. Step 2: Convert to fraction form
    5,631.87/8,441.97 = 2,121.19/x
  3. Step 3: Cross multiply
    5,631.87x = 8,441.97 × 2,121.19
  4. Step 4: Simplify right side
    5,631.87x = 17,907,022.34
  5. Step 5: Solve for x
    x = 17,907,022.34/5,631.87
  6. Step 6: Final answer
    x = 3,179.59

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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.