Home / 8,080.92-12,121.29-2,157.80

Finding the Fourth Proportional to 8,080.92, 12,121.29 and 2,157.80

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Solution

The fourth proportional to 8,080.92, 12,121.29 and 2,157.80 is: 3,236.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,080.92 : 12,121.29 = 2,157.80 : x
  2. Step 2: Convert to fraction form
    8,080.92/12,121.29 = 2,157.80/x
  3. Step 3: Cross multiply
    8,080.92x = 12,121.29 × 2,157.80
  4. Step 4: Simplify right side
    8,080.92x = 26,155,258.96
  5. Step 5: Solve for x
    x = 26,155,258.96/8,080.92
  6. Step 6: Final answer
    x = 3,236.67

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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.