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Finding the Fourth Proportional to 3,968.73, 5,483.43 and 3,135.83

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Solution

The fourth proportional to 3,968.73, 5,483.43 and 3,135.83 is: 4,332.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,968.73 : 5,483.43 = 3,135.83 : x
  2. Step 2: Convert to fraction form
    3,968.73/5,483.43 = 3,135.83/x
  3. Step 3: Cross multiply
    3,968.73x = 5,483.43 × 3,135.83
  4. Step 4: Simplify right side
    3,968.73x = 17,195,076.88
  5. Step 5: Solve for x
    x = 17,195,076.88/3,968.73
  6. Step 6: Final answer
    x = 4,332.64

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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.