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Finding the Fourth Proportional to 2,279.91, 3,420.33 and 799.29

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Solution

The fourth proportional to 2,279.91, 3,420.33 and 799.29 is: 1,199.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,279.91 : 3,420.33 = 799.29 : x
  2. Step 2: Convert to fraction form
    2,279.91/3,420.33 = 799.29/x
  3. Step 3: Cross multiply
    2,279.91x = 3,420.33 × 799.29
  4. Step 4: Simplify right side
    2,279.91x = 2,733,835.57
  5. Step 5: Solve for x
    x = 2,733,835.57/2,279.91
  6. Step 6: Final answer
    x = 1,199.10

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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.