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Finding the Fourth Proportional to 3,230.97, 4,845.81 and 890.38

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Solution

The fourth proportional to 3,230.97, 4,845.81 and 890.38 is: 1,335.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,230.97 : 4,845.81 = 890.38 : x
  2. Step 2: Convert to fraction form
    3,230.97/4,845.81 = 890.38/x
  3. Step 3: Cross multiply
    3,230.97x = 4,845.81 × 890.38
  4. Step 4: Simplify right side
    3,230.97x = 4,314,612.31
  5. Step 5: Solve for x
    x = 4,314,612.31/3,230.97
  6. Step 6: Final answer
    x = 1,335.39

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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.