Home / 3,980.26-5,492.78-2,211.94

Finding the Fourth Proportional to 3,980.26, 5,492.78 and 2,211.94

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Solution

The fourth proportional to 3,980.26, 5,492.78 and 2,211.94 is: 3,052.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,980.26 : 5,492.78 = 2,211.94 : x
  2. Step 2: Convert to fraction form
    3,980.26/5,492.78 = 2,211.94/x
  3. Step 3: Cross multiply
    3,980.26x = 5,492.78 × 2,211.94
  4. Step 4: Simplify right side
    3,980.26x = 12,149,699.79
  5. Step 5: Solve for x
    x = 12,149,699.79/3,980.26
  6. Step 6: Final answer
    x = 3,052.49

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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.