Home / 5,229.31-7,216.45-2,871.60

Finding the Fourth Proportional to 5,229.31, 7,216.45 and 2,871.60

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Solution

The fourth proportional to 5,229.31, 7,216.45 and 2,871.60 is: 3,962.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,229.31 : 7,216.45 = 2,871.60 : x
  2. Step 2: Convert to fraction form
    5,229.31/7,216.45 = 2,871.60/x
  3. Step 3: Cross multiply
    5,229.31x = 7,216.45 × 2,871.60
  4. Step 4: Simplify right side
    5,229.31x = 20,722,757.82
  5. Step 5: Solve for x
    x = 20,722,757.82/5,229.31
  6. Step 6: Final answer
    x = 3,962.81

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1.5x scale

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.