Home / 3,849.49-5,311.92-2,170.74

Finding the Fourth Proportional to 3,849.49, 5,311.92 and 2,170.74

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Solution

The fourth proportional to 3,849.49, 5,311.92 and 2,170.74 is: 2,995.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,849.49 : 5,311.92 = 2,170.74 : x
  2. Step 2: Convert to fraction form
    3,849.49/5,311.92 = 2,170.74/x
  3. Step 3: Cross multiply
    3,849.49x = 5,311.92 × 2,170.74
  4. Step 4: Simplify right side
    3,849.49x = 11,530,797.22
  5. Step 5: Solve for x
    x = 11,530,797.22/3,849.49
  6. Step 6: Final answer
    x = 2,995.41

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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.