Home / 3,998.86-5,518.18-2,206.36

Finding the Fourth Proportional to 3,998.86, 5,518.18 and 2,206.36

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Solution

The fourth proportional to 3,998.86, 5,518.18 and 2,206.36 is: 3,044.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,998.86 : 5,518.18 = 2,206.36 : x
  2. Step 2: Convert to fraction form
    3,998.86/5,518.18 = 2,206.36/x
  3. Step 3: Cross multiply
    3,998.86x = 5,518.18 × 2,206.36
  4. Step 4: Simplify right side
    3,998.86x = 12,175,078.52
  5. Step 5: Solve for x
    x = 12,175,078.52/3,998.86
  6. Step 6: Final answer
    x = 3,044.64

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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.