Home / 3,981.24-5,493.90-2,212.80

Finding the Fourth Proportional to 3,981.24, 5,493.90 and 2,212.80

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Solution

The fourth proportional to 3,981.24, 5,493.90 and 2,212.80 is: 3,053.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,981.24 : 5,493.90 = 2,212.80 : x
  2. Step 2: Convert to fraction form
    3,981.24/5,493.90 = 2,212.80/x
  3. Step 3: Cross multiply
    3,981.24x = 5,493.90 × 2,212.80
  4. Step 4: Simplify right side
    3,981.24x = 12,156,901.92
  5. Step 5: Solve for x
    x = 12,156,901.92/3,981.24
  6. Step 6: Final answer
    x = 3,053.55

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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.