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Finding the Fourth Proportional to 2,246.82, 3,367.92 and 859.78

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Solution

The fourth proportional to 2,246.82, 3,367.92 and 859.78 is: 1,288.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,246.82 : 3,367.92 = 859.78 : x
  2. Step 2: Convert to fraction form
    2,246.82/3,367.92 = 859.78/x
  3. Step 3: Cross multiply
    2,246.82x = 3,367.92 × 859.78
  4. Step 4: Simplify right side
    2,246.82x = 2,895,670.26
  5. Step 5: Solve for x
    x = 2,895,670.26/2,246.82
  6. Step 6: Final answer
    x = 1,288.79

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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.