Home / 8,108.96-12,161.68-2,185.68

Finding the Fourth Proportional to 8,108.96, 12,161.68 and 2,185.68

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Solution

The fourth proportional to 8,108.96, 12,161.68 and 2,185.68 is: 3,278.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,108.96 : 12,161.68 = 2,185.68 : x
  2. Step 2: Convert to fraction form
    8,108.96/12,161.68 = 2,185.68/x
  3. Step 3: Cross multiply
    8,108.96x = 12,161.68 × 2,185.68
  4. Step 4: Simplify right side
    8,108.96x = 26,581,540.74
  5. Step 5: Solve for x
    x = 26,581,540.74/8,108.96
  6. Step 6: Final answer
    x = 3,278.05

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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.