Home / 3,980.22-5,492.43-2,212.08

Finding the Fourth Proportional to 3,980.22, 5,492.43 and 2,212.08

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Solution

The fourth proportional to 3,980.22, 5,492.43 and 2,212.08 is: 3,052.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,980.22 : 5,492.43 = 2,212.08 : x
  2. Step 2: Convert to fraction form
    3,980.22/5,492.43 = 2,212.08/x
  3. Step 3: Cross multiply
    3,980.22x = 5,492.43 × 2,212.08
  4. Step 4: Simplify right side
    3,980.22x = 12,149,694.55
  5. Step 5: Solve for x
    x = 12,149,694.55/3,980.22
  6. Step 6: Final answer
    x = 3,052.52

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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.