Home / 3,891.22-5,370.59-2,297.78

Finding the Fourth Proportional to 3,891.22, 5,370.59 and 2,297.78

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Solution

The fourth proportional to 3,891.22, 5,370.59 and 2,297.78 is: 3,171.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,891.22 : 5,370.59 = 2,297.78 : x
  2. Step 2: Convert to fraction form
    3,891.22/5,370.59 = 2,297.78/x
  3. Step 3: Cross multiply
    3,891.22x = 5,370.59 × 2,297.78
  4. Step 4: Simplify right side
    3,891.22x = 12,340,434.29
  5. Step 5: Solve for x
    x = 12,340,434.29/3,891.22
  6. Step 6: Final answer
    x = 3,171.35

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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.