Home / 3,981.12-5,494.13-2,212.75

Finding the Fourth Proportional to 3,981.12, 5,494.13 and 2,212.75

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Solution

The fourth proportional to 3,981.12, 5,494.13 and 2,212.75 is: 3,053.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,981.12 : 5,494.13 = 2,212.75 : x
  2. Step 2: Convert to fraction form
    3,981.12/5,494.13 = 2,212.75/x
  3. Step 3: Cross multiply
    3,981.12x = 5,494.13 × 2,212.75
  4. Step 4: Simplify right side
    3,981.12x = 12,157,125.09
  5. Step 5: Solve for x
    x = 12,157,125.09/3,981.12
  6. Step 6: Final answer
    x = 3,053.70

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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.