Home / 5,229.39-7,217.13-2,991.47

Finding the Fourth Proportional to 5,229.39, 7,217.13 and 2,991.47

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Solution

The fourth proportional to 5,229.39, 7,217.13 and 2,991.47 is: 4,128.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,229.39 : 7,217.13 = 2,991.47 : x
  2. Step 2: Convert to fraction form
    5,229.39/7,217.13 = 2,991.47/x
  3. Step 3: Cross multiply
    5,229.39x = 7,217.13 × 2,991.47
  4. Step 4: Simplify right side
    5,229.39x = 21,589,827.88
  5. Step 5: Solve for x
    x = 21,589,827.88/5,229.39
  6. Step 6: Final answer
    x = 4,128.56

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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.