Home / 3,849.47-5,311.83-2,170.85

Finding the Fourth Proportional to 3,849.47, 5,311.83 and 2,170.85

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Solution

The fourth proportional to 3,849.47, 5,311.83 and 2,170.85 is: 2,995.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,849.47 : 5,311.83 = 2,170.85 : x
  2. Step 2: Convert to fraction form
    3,849.47/5,311.83 = 2,170.85/x
  3. Step 3: Cross multiply
    3,849.47x = 5,311.83 × 2,170.85
  4. Step 4: Simplify right side
    3,849.47x = 11,531,186.16
  5. Step 5: Solve for x
    x = 11,531,186.16/3,849.47
  6. Step 6: Final answer
    x = 2,995.53

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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.