Home / 8,408.89-12,609.68-2,860.75

Finding the Fourth Proportional to 8,408.89, 12,609.68 and 2,860.75

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Solution

The fourth proportional to 8,408.89, 12,609.68 and 2,860.75 is: 4,289.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,408.89 : 12,609.68 = 2,860.75 : x
  2. Step 2: Convert to fraction form
    8,408.89/12,609.68 = 2,860.75/x
  3. Step 3: Cross multiply
    8,408.89x = 12,609.68 × 2,860.75
  4. Step 4: Simplify right side
    8,408.89x = 36,073,142.06
  5. Step 5: Solve for x
    x = 36,073,142.06/8,408.89
  6. Step 6: Final answer
    x = 4,289.88

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1.5x scale

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.