Home / 3,981.35-5,493.32-2,989.00

Finding the Fourth Proportional to 3,981.35, 5,493.32 and 2,989.00

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Solution

The fourth proportional to 3,981.35, 5,493.32 and 2,989.00 is: 4,124.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,981.35 : 5,493.32 = 2,989.00 : x
  2. Step 2: Convert to fraction form
    3,981.35/5,493.32 = 2,989.00/x
  3. Step 3: Cross multiply
    3,981.35x = 5,493.32 × 2,989.00
  4. Step 4: Simplify right side
    3,981.35x = 16,419,536.61
  5. Step 5: Solve for x
    x = 16,419,536.61/3,981.35
  6. Step 6: Final answer
    x = 4,124.11

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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.