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Finding the Fourth Proportional to 3,279.72, 4,920.48 and 1,333.32

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Solution

The fourth proportional to 3,279.72, 4,920.48 and 1,333.32 is: 2,000.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,279.72 : 4,920.48 = 1,333.32 : x
  2. Step 2: Convert to fraction form
    3,279.72/4,920.48 = 1,333.32/x
  3. Step 3: Cross multiply
    3,279.72x = 4,920.48 × 1,333.32
  4. Step 4: Simplify right side
    3,279.72x = 6,560,574.39
  5. Step 5: Solve for x
    x = 6,560,574.39/3,279.72
  6. Step 6: Final answer
    x = 2,000.35

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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.