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Finding the Fourth Proportional to 3,230.78, 4,846.17 and 922.28

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Solution

The fourth proportional to 3,230.78, 4,846.17 and 922.28 is: 1,383.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,230.78 : 4,846.17 = 922.28 : x
  2. Step 2: Convert to fraction form
    3,230.78/4,846.17 = 922.28/x
  3. Step 3: Cross multiply
    3,230.78x = 4,846.17 × 922.28
  4. Step 4: Simplify right side
    3,230.78x = 4,469,525.67
  5. Step 5: Solve for x
    x = 4,469,525.67/3,230.78
  6. Step 6: Final answer
    x = 1,383.42

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Double scale
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Similar ratio
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1.5x scale

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.