Home / 5,109.93-7,052.31-2,871.90

Finding the Fourth Proportional to 5,109.93, 7,052.31 and 2,871.90

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Solution

The fourth proportional to 5,109.93, 7,052.31 and 2,871.90 is: 3,963.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,109.93 : 7,052.31 = 2,871.90 : x
  2. Step 2: Convert to fraction form
    5,109.93/7,052.31 = 2,871.90/x
  3. Step 3: Cross multiply
    5,109.93x = 7,052.31 × 2,871.90
  4. Step 4: Simplify right side
    5,109.93x = 20,253,529.09
  5. Step 5: Solve for x
    x = 20,253,529.09/5,109.93
  6. Step 6: Final answer
    x = 3,963.56

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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.