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Finding the Fourth Proportional to 3,388.50, 5,083.10 and 923.49

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Solution

The fourth proportional to 3,388.50, 5,083.10 and 923.49 is: 1,385.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,388.50 : 5,083.10 = 923.49 : x
  2. Step 2: Convert to fraction form
    3,388.50/5,083.10 = 923.49/x
  3. Step 3: Cross multiply
    3,388.50x = 5,083.10 × 923.49
  4. Step 4: Simplify right side
    3,388.50x = 4,694,190.86
  5. Step 5: Solve for x
    x = 4,694,190.86/3,388.50
  6. Step 6: Final answer
    x = 1,385.33

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Double scale
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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.