Home / 3,981.10-5,493.80-2,212.60

Finding the Fourth Proportional to 3,981.10, 5,493.80 and 2,212.60

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Solution

The fourth proportional to 3,981.10, 5,493.80 and 2,212.60 is: 3,053.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,981.10 : 5,493.80 = 2,212.60 : x
  2. Step 2: Convert to fraction form
    3,981.10/5,493.80 = 2,212.60/x
  3. Step 3: Cross multiply
    3,981.10x = 5,493.80 × 2,212.60
  4. Step 4: Simplify right side
    3,981.10x = 12,155,581.88
  5. Step 5: Solve for x
    x = 12,155,581.88/3,981.10
  6. Step 6: Final answer
    x = 3,053.32

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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.