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Finding the Fourth Proportional to 2,578.11, 3,867.13 and 630.33

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Solution

The fourth proportional to 2,578.11, 3,867.13 and 630.33 is: 945.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,578.11 : 3,867.13 = 630.33 : x
  2. Step 2: Convert to fraction form
    2,578.11/3,867.13 = 630.33/x
  3. Step 3: Cross multiply
    2,578.11x = 3,867.13 × 630.33
  4. Step 4: Simplify right side
    2,578.11x = 2,437,568.05
  5. Step 5: Solve for x
    x = 2,437,568.05/2,578.11
  6. Step 6: Final answer
    x = 945.49

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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.