Home / 5,249.28-7,243.98-2,891.40

Finding the Fourth Proportional to 5,249.28, 7,243.98 and 2,891.40

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Solution

The fourth proportional to 5,249.28, 7,243.98 and 2,891.40 is: 3,990.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,249.28 : 7,243.98 = 2,891.40 : x
  2. Step 2: Convert to fraction form
    5,249.28/7,243.98 = 2,891.40/x
  3. Step 3: Cross multiply
    5,249.28x = 7,243.98 × 2,891.40
  4. Step 4: Simplify right side
    5,249.28x = 20,945,243.77
  5. Step 5: Solve for x
    x = 20,945,243.77/5,249.28
  6. Step 6: Final answer
    x = 3,990.12

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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.