Home / 8,608.24-12,912.60-2,765.20

Finding the Fourth Proportional to 8,608.24, 12,912.60 and 2,765.20

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Solution

The fourth proportional to 8,608.24, 12,912.60 and 2,765.20 is: 4,147.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,608.24 : 12,912.60 = 2,765.20 : x
  2. Step 2: Convert to fraction form
    8,608.24/12,912.60 = 2,765.20/x
  3. Step 3: Cross multiply
    8,608.24x = 12,912.60 × 2,765.20
  4. Step 4: Simplify right side
    8,608.24x = 35,705,921.52
  5. Step 5: Solve for x
    x = 35,705,921.52/8,608.24
  6. Step 6: Final answer
    x = 4,147.88

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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.