Home / 8,120.55-12,179.46-2,859.47

Finding the Fourth Proportional to 8,120.55, 12,179.46 and 2,859.47

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Solution

The fourth proportional to 8,120.55, 12,179.46 and 2,859.47 is: 4,288.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,120.55 : 12,179.46 = 2,859.47 : x
  2. Step 2: Convert to fraction form
    8,120.55/12,179.46 = 2,859.47/x
  3. Step 3: Cross multiply
    8,120.55x = 12,179.46 × 2,859.47
  4. Step 4: Simplify right side
    8,120.55x = 34,826,795.98
  5. Step 5: Solve for x
    x = 34,826,795.98/8,120.55
  6. Step 6: Final answer
    x = 4,288.72

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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.