Home / 5,319.28-7,982-2,198.71

Finding the Fourth Proportional to 5,319.28, 7,982 and 2,198.71

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Solution

The fourth proportional to 5,319.28, 7,982 and 2,198.71 is: 3,299.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,319.28 : 7,982 = 2,198.71 : x
  2. Step 2: Convert to fraction form
    5,319.28/7,982 = 2,198.71/x
  3. Step 3: Cross multiply
    5,319.28x = 7,982 × 2,198.71
  4. Step 4: Simplify right side
    5,319.28x = 17,550,103.22
  5. Step 5: Solve for x
    x = 17,550,103.22/5,319.28
  6. Step 6: Final answer
    x = 3,299.34

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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.