Home / 3,981.98-5,492.36-3,380.33

Finding the Fourth Proportional to 3,981.98, 5,492.36 and 3,380.33

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Solution

The fourth proportional to 3,981.98, 5,492.36 and 3,380.33 is: 4,662.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,981.98 : 5,492.36 = 3,380.33 : x
  2. Step 2: Convert to fraction form
    3,981.98/5,492.36 = 3,380.33/x
  3. Step 3: Cross multiply
    3,981.98x = 5,492.36 × 3,380.33
  4. Step 4: Simplify right side
    3,981.98x = 18,565,986.11
  5. Step 5: Solve for x
    x = 18,565,986.11/3,981.98
  6. Step 6: Final answer
    x = 4,662.50

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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.