Home / 3,279.42-4,921.97-1,720.53

Finding the Fourth Proportional to 3,279.42, 4,921.97 and 1,720.53

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Solution

The fourth proportional to 3,279.42, 4,921.97 and 1,720.53 is: 2,582.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,279.42 : 4,921.97 = 1,720.53 : x
  2. Step 2: Convert to fraction form
    3,279.42/4,921.97 = 1,720.53/x
  3. Step 3: Cross multiply
    3,279.42x = 4,921.97 × 1,720.53
  4. Step 4: Simplify right side
    3,279.42x = 8,468,382.28
  5. Step 5: Solve for x
    x = 8,468,382.28/3,279.42
  6. Step 6: Final answer
    x = 2,582.28

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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.