Home / 5,120.91-7,679.94-2,198.52

Finding the Fourth Proportional to 5,120.91, 7,679.94 and 2,198.52

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Solution

The fourth proportional to 5,120.91, 7,679.94 and 2,198.52 is: 3,297.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,120.91 : 7,679.94 = 2,198.52 : x
  2. Step 2: Convert to fraction form
    5,120.91/7,679.94 = 2,198.52/x
  3. Step 3: Cross multiply
    5,120.91x = 7,679.94 × 2,198.52
  4. Step 4: Simplify right side
    5,120.91x = 16,884,501.69
  5. Step 5: Solve for x
    x = 16,884,501.69/5,120.91
  6. Step 6: Final answer
    x = 3,297.17

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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.