Home / 3,981.56-5,495.46-2,581.88

Finding the Fourth Proportional to 3,981.56, 5,495.46 and 2,581.88

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Solution

The fourth proportional to 3,981.56, 5,495.46 and 2,581.88 is: 3,563.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,981.56 : 5,495.46 = 2,581.88 : x
  2. Step 2: Convert to fraction form
    3,981.56/5,495.46 = 2,581.88/x
  3. Step 3: Cross multiply
    3,981.56x = 5,495.46 × 2,581.88
  4. Step 4: Simplify right side
    3,981.56x = 14,188,618.26
  5. Step 5: Solve for x
    x = 14,188,618.26/3,981.56
  6. Step 6: Final answer
    x = 3,563.58

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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.