Home / 5,249.40-7,244.20-2,891.68

Finding the Fourth Proportional to 5,249.40, 7,244.20 and 2,891.68

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Solution

The fourth proportional to 5,249.40, 7,244.20 and 2,891.68 is: 3,990.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,249.40 : 7,244.20 = 2,891.68 : x
  2. Step 2: Convert to fraction form
    5,249.40/7,244.20 = 2,891.68/x
  3. Step 3: Cross multiply
    5,249.40x = 7,244.20 × 2,891.68
  4. Step 4: Simplify right side
    5,249.40x = 20,947,908.26
  5. Step 5: Solve for x
    x = 20,947,908.26/5,249.40
  6. Step 6: Final answer
    x = 3,990.53

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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.