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Finding the Fourth Proportional to 3,860.73, 5,786.44 and 1,777.88

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Solution

The fourth proportional to 3,860.73, 5,786.44 and 1,777.88 is: 2,664.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,860.73 : 5,786.44 = 1,777.88 : x
  2. Step 2: Convert to fraction form
    3,860.73/5,786.44 = 1,777.88/x
  3. Step 3: Cross multiply
    3,860.73x = 5,786.44 × 1,777.88
  4. Step 4: Simplify right side
    3,860.73x = 10,287,605.97
  5. Step 5: Solve for x
    x = 10,287,605.97/3,860.73
  6. Step 6: Final answer
    x = 2,664.68

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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.