Home / 3,621.42-4,998.21-2,129.73

Finding the Fourth Proportional to 3,621.42, 4,998.21 and 2,129.73

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Solution

The fourth proportional to 3,621.42, 4,998.21 and 2,129.73 is: 2,939.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,621.42 : 4,998.21 = 2,129.73 : x
  2. Step 2: Convert to fraction form
    3,621.42/4,998.21 = 2,129.73/x
  3. Step 3: Cross multiply
    3,621.42x = 4,998.21 × 2,129.73
  4. Step 4: Simplify right side
    3,621.42x = 10,644,837.78
  5. Step 5: Solve for x
    x = 10,644,837.78/3,621.42
  6. Step 6: Final answer
    x = 2,939.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.