Home / 3,981.64-5,494.89-2,213.41

Finding the Fourth Proportional to 3,981.64, 5,494.89 and 2,213.41

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Solution

The fourth proportional to 3,981.64, 5,494.89 and 2,213.41 is: 3,054.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,981.64 : 5,494.89 = 2,213.41 : x
  2. Step 2: Convert to fraction form
    3,981.64/5,494.89 = 2,213.41/x
  3. Step 3: Cross multiply
    3,981.64x = 5,494.89 × 2,213.41
  4. Step 4: Simplify right side
    3,981.64x = 12,162,444.47
  5. Step 5: Solve for x
    x = 12,162,444.47/3,981.64
  6. Step 6: Final answer
    x = 3,054.63

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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.