Home / 8,081.26-12,120.91-2,158.60

Finding the Fourth Proportional to 8,081.26, 12,120.91 and 2,158.60

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Solution

The fourth proportional to 8,081.26, 12,120.91 and 2,158.60 is: 3,237.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,081.26 : 12,120.91 = 2,158.60 : x
  2. Step 2: Convert to fraction form
    8,081.26/12,120.91 = 2,158.60/x
  3. Step 3: Cross multiply
    8,081.26x = 12,120.91 × 2,158.60
  4. Step 4: Simplify right side
    8,081.26x = 26,164,196.33
  5. Step 5: Solve for x
    x = 26,164,196.33/8,081.26
  6. Step 6: Final answer
    x = 3,237.64

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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.