Home / 8,120.56-12,180.96-2,926.96

Finding the Fourth Proportional to 8,120.56, 12,180.96 and 2,926.96

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Solution

The fourth proportional to 8,120.56, 12,180.96 and 2,926.96 is: 4,390.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,120.56 : 12,180.96 = 2,926.96 : x
  2. Step 2: Convert to fraction form
    8,120.56/12,180.96 = 2,926.96/x
  3. Step 3: Cross multiply
    8,120.56x = 12,180.96 × 2,926.96
  4. Step 4: Simplify right side
    8,120.56x = 35,653,182.68
  5. Step 5: Solve for x
    x = 35,653,182.68/8,120.56
  6. Step 6: Final answer
    x = 4,390.48

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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.