Home / 8,408.20-12,608.64-2,860.05

Finding the Fourth Proportional to 8,408.20, 12,608.64 and 2,860.05

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Solution

The fourth proportional to 8,408.20, 12,608.64 and 2,860.05 is: 4,288.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,408.20 : 12,608.64 = 2,860.05 : x
  2. Step 2: Convert to fraction form
    8,408.20/12,608.64 = 2,860.05/x
  3. Step 3: Cross multiply
    8,408.20x = 12,608.64 × 2,860.05
  4. Step 4: Simplify right side
    8,408.20x = 36,061,340.83
  5. Step 5: Solve for x
    x = 36,061,340.83/8,408.20
  6. Step 6: Final answer
    x = 4,288.83

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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.