Home / 8,119.15-12,180.84-2,572.57

Finding the Fourth Proportional to 8,119.15, 12,180.84 and 2,572.57

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Solution

The fourth proportional to 8,119.15, 12,180.84 and 2,572.57 is: 3,859.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,119.15 : 12,180.84 = 2,572.57 : x
  2. Step 2: Convert to fraction form
    8,119.15/12,180.84 = 2,572.57/x
  3. Step 3: Cross multiply
    8,119.15x = 12,180.84 × 2,572.57
  4. Step 4: Simplify right side
    8,119.15x = 31,336,063.56
  5. Step 5: Solve for x
    x = 31,336,063.56/8,119.15
  6. Step 6: Final answer
    x = 3,859.53

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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.