Home / 5,198.21-7,173.32-2,840.43

Finding the Fourth Proportional to 5,198.21, 7,173.32 and 2,840.43

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Solution

The fourth proportional to 5,198.21, 7,173.32 and 2,840.43 is: 3,919.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,198.21 : 7,173.32 = 2,840.43 : x
  2. Step 2: Convert to fraction form
    5,198.21/7,173.32 = 2,840.43/x
  3. Step 3: Cross multiply
    5,198.21x = 7,173.32 × 2,840.43
  4. Step 4: Simplify right side
    5,198.21x = 20,375,299.13
  5. Step 5: Solve for x
    x = 20,375,299.13/5,198.21
  6. Step 6: Final answer
    x = 3,919.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.