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Finding the Fourth Proportional to 2,866.58, 3,964.61 and 2,571.74

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Solution

The fourth proportional to 2,866.58, 3,964.61 and 2,571.74 is: 3,556.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,866.58 : 3,964.61 = 2,571.74 : x
  2. Step 2: Convert to fraction form
    2,866.58/3,964.61 = 2,571.74/x
  3. Step 3: Cross multiply
    2,866.58x = 3,964.61 × 2,571.74
  4. Step 4: Simplify right side
    2,866.58x = 10,195,946.12
  5. Step 5: Solve for x
    x = 10,195,946.12/2,866.58
  6. Step 6: Final answer
    x = 3,556.83

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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.