Home / 3,981.15-5,493.96-2,212.86

Finding the Fourth Proportional to 3,981.15, 5,493.96 and 2,212.86

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Solution

The fourth proportional to 3,981.15, 5,493.96 and 2,212.86 is: 3,053.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,981.15 : 5,493.96 = 2,212.86 : x
  2. Step 2: Convert to fraction form
    3,981.15/5,493.96 = 2,212.86/x
  3. Step 3: Cross multiply
    3,981.15x = 5,493.96 × 2,212.86
  4. Step 4: Simplify right side
    3,981.15x = 12,157,364.33
  5. Step 5: Solve for x
    x = 12,157,364.33/3,981.15
  6. Step 6: Final answer
    x = 3,053.73

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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.