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Finding the Fourth Proportional to 8,930.82, 12,324.24 and 5,393.42

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Solution

The fourth proportional to 8,930.82, 12,324.24 and 5,393.42 is: 7,442.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,930.82 : 12,324.24 = 5,393.42 : x
  2. Step 2: Convert to fraction form
    8,930.82/12,324.24 = 5,393.42/x
  3. Step 3: Cross multiply
    8,930.82x = 12,324.24 × 5,393.42
  4. Step 4: Simplify right side
    8,930.82x = 66,469,740.88
  5. Step 5: Solve for x
    x = 66,469,740.88/8,930.82
  6. Step 6: Final answer
    x = 7,442.74

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1.5x scale

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.