Home / 3,891.09-5,370.13-2,212.91

Finding the Fourth Proportional to 3,891.09, 5,370.13 and 2,212.91

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Solution

The fourth proportional to 3,891.09, 5,370.13 and 2,212.91 is: 3,054.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,891.09 : 5,370.13 = 2,212.91 : x
  2. Step 2: Convert to fraction form
    3,891.09/5,370.13 = 2,212.91/x
  3. Step 3: Cross multiply
    3,891.09x = 5,370.13 × 2,212.91
  4. Step 4: Simplify right side
    3,891.09x = 11,883,614.38
  5. Step 5: Solve for x
    x = 11,883,614.38/3,891.09
  6. Step 6: Final answer
    x = 3,054.06

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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.