Home / 3,981.15-5,494.07-2,212.76

Finding the Fourth Proportional to 3,981.15, 5,494.07 and 2,212.76

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Solution

The fourth proportional to 3,981.15, 5,494.07 and 2,212.76 is: 3,053.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,981.15 : 5,494.07 = 2,212.76 : x
  2. Step 2: Convert to fraction form
    3,981.15/5,494.07 = 2,212.76/x
  3. Step 3: Cross multiply
    3,981.15x = 5,494.07 × 2,212.76
  4. Step 4: Simplify right side
    3,981.15x = 12,157,019.80
  5. Step 5: Solve for x
    x = 12,157,019.80/3,981.15
  6. Step 6: Final answer
    x = 3,053.65

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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.