Home / 8,279.79-12,419.64-3,348.09

Finding the Fourth Proportional to 8,279.79, 12,419.64 and 3,348.09

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Solution

The fourth proportional to 8,279.79, 12,419.64 and 3,348.09 is: 5,022.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,279.79 : 12,419.64 = 3,348.09 : x
  2. Step 2: Convert to fraction form
    8,279.79/12,419.64 = 3,348.09/x
  3. Step 3: Cross multiply
    8,279.79x = 12,419.64 × 3,348.09
  4. Step 4: Simplify right side
    8,279.79x = 41,582,072.49
  5. Step 5: Solve for x
    x = 41,582,072.49/8,279.79
  6. Step 6: Final answer
    x = 5,022.12

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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.