Home / 3,761.46-5,191.11-2,189.64

Finding the Fourth Proportional to 3,761.46, 5,191.11 and 2,189.64

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Solution

The fourth proportional to 3,761.46, 5,191.11 and 2,189.64 is: 3,021.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,761.46 : 5,191.11 = 2,189.64 : x
  2. Step 2: Convert to fraction form
    3,761.46/5,191.11 = 2,189.64/x
  3. Step 3: Cross multiply
    3,761.46x = 5,191.11 × 2,189.64
  4. Step 4: Simplify right side
    3,761.46x = 11,366,662.10
  5. Step 5: Solve for x
    x = 11,366,662.10/3,761.46
  6. Step 6: Final answer
    x = 3,021.88

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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.