Home / 2,791.31-4,181.36-1,331.42

Finding the Fourth Proportional to 2,791.31, 4,181.36 and 1,331.42

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Solution

The fourth proportional to 2,791.31, 4,181.36 and 1,331.42 is: 1,994.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,791.31 : 4,181.36 = 1,331.42 : x
  2. Step 2: Convert to fraction form
    2,791.31/4,181.36 = 1,331.42/x
  3. Step 3: Cross multiply
    2,791.31x = 4,181.36 × 1,331.42
  4. Step 4: Simplify right side
    2,791.31x = 5,567,118.77
  5. Step 5: Solve for x
    x = 5,567,118.77/2,791.31
  6. Step 6: Final answer
    x = 1,994.45

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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.