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Finding the Fourth Proportional to 2,283.83, 3,425.97 and 640.38

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Solution

The fourth proportional to 2,283.83, 3,425.97 and 640.38 is: 960.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,283.83 : 3,425.97 = 640.38 : x
  2. Step 2: Convert to fraction form
    2,283.83/3,425.97 = 640.38/x
  3. Step 3: Cross multiply
    2,283.83x = 3,425.97 × 640.38
  4. Step 4: Simplify right side
    2,283.83x = 2,193,903.14
  5. Step 5: Solve for x
    x = 2,193,903.14/2,283.83
  6. Step 6: Final answer
    x = 960.62

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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.