Home / 3,891.26-5,370.08-2,212.82

Finding the Fourth Proportional to 3,891.26, 5,370.08 and 2,212.82

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Solution

The fourth proportional to 3,891.26, 5,370.08 and 2,212.82 is: 3,053.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,891.26 : 5,370.08 = 2,212.82 : x
  2. Step 2: Convert to fraction form
    3,891.26/5,370.08 = 2,212.82/x
  3. Step 3: Cross multiply
    3,891.26x = 5,370.08 × 2,212.82
  4. Step 4: Simplify right side
    3,891.26x = 11,882,999.11
  5. Step 5: Solve for x
    x = 11,882,999.11/3,891.26
  6. Step 6: Final answer
    x = 3,053.77

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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.