Home / 3,980.34-5,493.09-2,211.96

Finding the Fourth Proportional to 3,980.34, 5,493.09 and 2,211.96

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Solution

The fourth proportional to 3,980.34, 5,493.09 and 2,211.96 is: 3,052.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,980.34 : 5,493.09 = 2,211.96 : x
  2. Step 2: Convert to fraction form
    3,980.34/5,493.09 = 2,211.96/x
  3. Step 3: Cross multiply
    3,980.34x = 5,493.09 × 2,211.96
  4. Step 4: Simplify right side
    3,980.34x = 12,150,495.36
  5. Step 5: Solve for x
    x = 12,150,495.36/3,980.34
  6. Step 6: Final answer
    x = 3,052.63

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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.