Home / 5,249.47-7,243.79-2,891.05

Finding the Fourth Proportional to 5,249.47, 7,243.79 and 2,891.05

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Solution

The fourth proportional to 5,249.47, 7,243.79 and 2,891.05 is: 3,989.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,249.47 : 7,243.79 = 2,891.05 : x
  2. Step 2: Convert to fraction form
    5,249.47/7,243.79 = 2,891.05/x
  3. Step 3: Cross multiply
    5,249.47x = 7,243.79 × 2,891.05
  4. Step 4: Simplify right side
    5,249.47x = 20,942,144.62
  5. Step 5: Solve for x
    x = 20,942,144.62/5,249.47
  6. Step 6: Final answer
    x = 3,989.38

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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.