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Finding the Fourth Proportional to 3,355.54, 5,033.50 and 890.38

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Solution

The fourth proportional to 3,355.54, 5,033.50 and 890.38 is: 1,335.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,355.54 : 5,033.50 = 890.38 : x
  2. Step 2: Convert to fraction form
    3,355.54/5,033.50 = 890.38/x
  3. Step 3: Cross multiply
    3,355.54x = 5,033.50 × 890.38
  4. Step 4: Simplify right side
    3,355.54x = 4,481,727.73
  5. Step 5: Solve for x
    x = 4,481,727.73/3,355.54
  6. Step 6: Final answer
    x = 1,335.62

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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.