Home / 3,981.18-5,493.96-2,212.74

Finding the Fourth Proportional to 3,981.18, 5,493.96 and 2,212.74

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Solution

The fourth proportional to 3,981.18, 5,493.96 and 2,212.74 is: 3,053.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,981.18 : 5,493.96 = 2,212.74 : x
  2. Step 2: Convert to fraction form
    3,981.18/5,493.96 = 2,212.74/x
  3. Step 3: Cross multiply
    3,981.18x = 5,493.96 × 2,212.74
  4. Step 4: Simplify right side
    3,981.18x = 12,156,705.05
  5. Step 5: Solve for x
    x = 12,156,705.05/3,981.18
  6. Step 6: Final answer
    x = 3,053.54

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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.