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Finding the Fourth Proportional to 6,578.78, 9,857.04 and 3,976.25

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Solution

The fourth proportional to 6,578.78, 9,857.04 and 3,976.25 is: 5,957.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,578.78 : 9,857.04 = 3,976.25 : x
  2. Step 2: Convert to fraction form
    6,578.78/9,857.04 = 3,976.25/x
  3. Step 3: Cross multiply
    6,578.78x = 9,857.04 × 3,976.25
  4. Step 4: Simplify right side
    6,578.78x = 39,194,055.30
  5. Step 5: Solve for x
    x = 39,194,055.30/6,578.78
  6. Step 6: Final answer
    x = 5,957.65

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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.