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Finding the Fourth Proportional to 2,679.44, 4,016.93 and 1,859.31

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Solution

The fourth proportional to 2,679.44, 4,016.93 and 1,859.31 is: 2,787.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,679.44 : 4,016.93 = 1,859.31 : x
  2. Step 2: Convert to fraction form
    2,679.44/4,016.93 = 1,859.31/x
  3. Step 3: Cross multiply
    2,679.44x = 4,016.93 × 1,859.31
  4. Step 4: Simplify right side
    2,679.44x = 7,468,708.82
  5. Step 5: Solve for x
    x = 7,468,708.82/2,679.44
  6. Step 6: Final answer
    x = 2,787.42

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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.