Home / 3,998.82-5,518.80-2,231.04

Finding the Fourth Proportional to 3,998.82, 5,518.80 and 2,231.04

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Solution

The fourth proportional to 3,998.82, 5,518.80 and 2,231.04 is: 3,079.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,998.82 : 5,518.80 = 2,231.04 : x
  2. Step 2: Convert to fraction form
    3,998.82/5,518.80 = 2,231.04/x
  3. Step 3: Cross multiply
    3,998.82x = 5,518.80 × 2,231.04
  4. Step 4: Simplify right side
    3,998.82x = 12,312,663.55
  5. Step 5: Solve for x
    x = 12,312,663.55/3,998.82
  6. Step 6: Final answer
    x = 3,079.07

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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.