Home / 8,719.20-13,077.43-3,171.73

Finding the Fourth Proportional to 8,719.20, 13,077.43 and 3,171.73

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Solution

The fourth proportional to 8,719.20, 13,077.43 and 3,171.73 is: 4,757.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,719.20 : 13,077.43 = 3,171.73 : x
  2. Step 2: Convert to fraction form
    8,719.20/13,077.43 = 3,171.73/x
  3. Step 3: Cross multiply
    8,719.20x = 13,077.43 × 3,171.73
  4. Step 4: Simplify right side
    8,719.20x = 41,478,077.05
  5. Step 5: Solve for x
    x = 41,478,077.05/8,719.20
  6. Step 6: Final answer
    x = 4,757.10

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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.