Home / 8,621.62-12,921.97-3,935.21

Finding the Fourth Proportional to 8,621.62, 12,921.97 and 3,935.21

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Solution

The fourth proportional to 8,621.62, 12,921.97 and 3,935.21 is: 5,898.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,621.62 : 12,921.97 = 3,935.21 : x
  2. Step 2: Convert to fraction form
    8,621.62/12,921.97 = 3,935.21/x
  3. Step 3: Cross multiply
    8,621.62x = 12,921.97 × 3,935.21
  4. Step 4: Simplify right side
    8,621.62x = 50,850,665.56
  5. Step 5: Solve for x
    x = 50,850,665.56/8,621.62
  6. Step 6: Final answer
    x = 5,898.04

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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.