Home / 5,109.82-7,051.96-2,871.80

Finding the Fourth Proportional to 5,109.82, 7,051.96 and 2,871.80

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Solution

The fourth proportional to 5,109.82, 7,051.96 and 2,871.80 is: 3,963.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,109.82 : 7,051.96 = 2,871.80 : x
  2. Step 2: Convert to fraction form
    5,109.82/7,051.96 = 2,871.80/x
  3. Step 3: Cross multiply
    5,109.82x = 7,051.96 × 2,871.80
  4. Step 4: Simplify right side
    5,109.82x = 20,251,818.73
  5. Step 5: Solve for x
    x = 20,251,818.73/5,109.82
  6. Step 6: Final answer
    x = 3,963.31

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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.