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Finding the Fourth Proportional to 7,198, 10,797.36 and 6,819.28

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Solution

The fourth proportional to 7,198, 10,797.36 and 6,819.28 is: 10,229.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,198 : 10,797.36 = 6,819.28 : x
  2. Step 2: Convert to fraction form
    7,198/10,797.36 = 6,819.28/x
  3. Step 3: Cross multiply
    7,198x = 10,797.36 × 6,819.28
  4. Step 4: Simplify right side
    7,198x = 73,630,221.10
  5. Step 5: Solve for x
    x = 73,630,221.10/7,198
  6. Step 6: Final answer
    x = 10,229.26

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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.