Home / 8,120.40-12,180.74-2,573.79

Finding the Fourth Proportional to 8,120.40, 12,180.74 and 2,573.79

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Solution

The fourth proportional to 8,120.40, 12,180.74 and 2,573.79 is: 3,860.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,120.40 : 12,180.74 = 2,573.79 : x
  2. Step 2: Convert to fraction form
    8,120.40/12,180.74 = 2,573.79/x
  3. Step 3: Cross multiply
    8,120.40x = 12,180.74 × 2,573.79
  4. Step 4: Simplify right side
    8,120.40x = 31,350,653.94
  5. Step 5: Solve for x
    x = 31,350,653.94/8,120.40
  6. Step 6: Final answer
    x = 3,860.73

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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.