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Finding the Fourth Proportional to 3,279.39, 4,920.54 and 1,719.02

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Solution

The fourth proportional to 3,279.39, 4,920.54 and 1,719.02 is: 2,579.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,279.39 : 4,920.54 = 1,719.02 : x
  2. Step 2: Convert to fraction form
    3,279.39/4,920.54 = 1,719.02/x
  3. Step 3: Cross multiply
    3,279.39x = 4,920.54 × 1,719.02
  4. Step 4: Simplify right side
    3,279.39x = 8,458,498.08
  5. Step 5: Solve for x
    x = 8,458,498.08/3,279.39
  6. Step 6: Final answer
    x = 2,579.29

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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.