Home / 3,981.08-5,493.78-2,212.60

Finding the Fourth Proportional to 3,981.08, 5,493.78 and 2,212.60

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Solution

The fourth proportional to 3,981.08, 5,493.78 and 2,212.60 is: 3,053.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,981.08 : 5,493.78 = 2,212.60 : x
  2. Step 2: Convert to fraction form
    3,981.08/5,493.78 = 2,212.60/x
  3. Step 3: Cross multiply
    3,981.08x = 5,493.78 × 2,212.60
  4. Step 4: Simplify right side
    3,981.08x = 12,155,537.63
  5. Step 5: Solve for x
    x = 12,155,537.63/3,981.08
  6. Step 6: Final answer
    x = 3,053.33

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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.