Home / 3,279.72-4,916.88-2,181.36

Finding the Fourth Proportional to 3,279.72, 4,916.88 and 2,181.36

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Solution

The fourth proportional to 3,279.72, 4,916.88 and 2,181.36 is: 3,270.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,279.72 : 4,916.88 = 2,181.36 : x
  2. Step 2: Convert to fraction form
    3,279.72/4,916.88 = 2,181.36/x
  3. Step 3: Cross multiply
    3,279.72x = 4,916.88 × 2,181.36
  4. Step 4: Simplify right side
    3,279.72x = 10,725,485.36
  5. Step 5: Solve for x
    x = 10,725,485.36/3,279.72
  6. Step 6: Final answer
    x = 3,270.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.