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Finding the Fourth Proportional to 3,578.88, 4,939.44 and 2,007.36

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Solution

The fourth proportional to 3,578.88, 4,939.44 and 2,007.36 is: 2,770.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,578.88 : 4,939.44 = 2,007.36 : x
  2. Step 2: Convert to fraction form
    3,578.88/4,939.44 = 2,007.36/x
  3. Step 3: Cross multiply
    3,578.88x = 4,939.44 × 2,007.36
  4. Step 4: Simplify right side
    3,578.88x = 9,915,234.28
  5. Step 5: Solve for x
    x = 9,915,234.28/3,578.88
  6. Step 6: Final answer
    x = 2,770.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.