Home / 8,279.28-12,421.32-2,435.90

Finding the Fourth Proportional to 8,279.28, 12,421.32 and 2,435.90

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Solution

The fourth proportional to 8,279.28, 12,421.32 and 2,435.90 is: 3,654.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,279.28 : 12,421.32 = 2,435.90 : x
  2. Step 2: Convert to fraction form
    8,279.28/12,421.32 = 2,435.90/x
  3. Step 3: Cross multiply
    8,279.28x = 12,421.32 × 2,435.90
  4. Step 4: Simplify right side
    8,279.28x = 30,257,093.39
  5. Step 5: Solve for x
    x = 30,257,093.39/8,279.28
  6. Step 6: Final answer
    x = 3,654.56

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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.