Home / 3,279.10-4,914.30-1,720.43

Finding the Fourth Proportional to 3,279.10, 4,914.30 and 1,720.43

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Solution

The fourth proportional to 3,279.10, 4,914.30 and 1,720.43 is: 2,578.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,279.10 : 4,914.30 = 1,720.43 : x
  2. Step 2: Convert to fraction form
    3,279.10/4,914.30 = 1,720.43/x
  3. Step 3: Cross multiply
    3,279.10x = 4,914.30 × 1,720.43
  4. Step 4: Simplify right side
    3,279.10x = 8,454,709.15
  5. Step 5: Solve for x
    x = 8,454,709.15/3,279.10
  6. Step 6: Final answer
    x = 2,578.36

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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.