Home / 2,871.86-3,963.33-2,172.02

Finding the Fourth Proportional to 2,871.86, 3,963.33 and 2,172.02

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Solution

The fourth proportional to 2,871.86, 3,963.33 and 2,172.02 is: 2,997.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,871.86 : 3,963.33 = 2,172.02 : x
  2. Step 2: Convert to fraction form
    2,871.86/3,963.33 = 2,172.02/x
  3. Step 3: Cross multiply
    2,871.86x = 3,963.33 × 2,172.02
  4. Step 4: Simplify right side
    2,871.86x = 8,608,432.03
  5. Step 5: Solve for x
    x = 8,608,432.03/2,871.86
  6. Step 6: Final answer
    x = 2,997.51

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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.