Home / 5,521.82-7,620.44-3,131.91

Finding the Fourth Proportional to 5,521.82, 7,620.44 and 3,131.91

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Solution

The fourth proportional to 5,521.82, 7,620.44 and 3,131.91 is: 4,322.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,521.82 : 7,620.44 = 3,131.91 : x
  2. Step 2: Convert to fraction form
    5,521.82/7,620.44 = 3,131.91/x
  3. Step 3: Cross multiply
    5,521.82x = 7,620.44 × 3,131.91
  4. Step 4: Simplify right side
    5,521.82x = 23,866,516.58
  5. Step 5: Solve for x
    x = 23,866,516.58/5,521.82
  6. Step 6: Final answer
    x = 4,322.22

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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.