Home / 8,120.66-12,180.20-5,504.97

Finding the Fourth Proportional to 8,120.66, 12,180.20 and 5,504.97

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Solution

The fourth proportional to 8,120.66, 12,180.20 and 5,504.97 is: 8,256.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,120.66 : 12,180.20 = 5,504.97 : x
  2. Step 2: Convert to fraction form
    8,120.66/12,180.20 = 5,504.97/x
  3. Step 3: Cross multiply
    8,120.66x = 12,180.20 × 5,504.97
  4. Step 4: Simplify right side
    8,120.66x = 67,051,659.84
  5. Step 5: Solve for x
    x = 67,051,659.84/8,120.66
  6. Step 6: Final answer
    x = 8,256.92

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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.