Home / 3,621.88-4,998.18-2,129.77

Finding the Fourth Proportional to 3,621.88, 4,998.18 and 2,129.77

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Solution

The fourth proportional to 3,621.88, 4,998.18 and 2,129.77 is: 2,939.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,621.88 : 4,998.18 = 2,129.77 : x
  2. Step 2: Convert to fraction form
    3,621.88/4,998.18 = 2,129.77/x
  3. Step 3: Cross multiply
    3,621.88x = 4,998.18 × 2,129.77
  4. Step 4: Simplify right side
    3,621.88x = 10,644,973.82
  5. Step 5: Solve for x
    x = 10,644,973.82/3,621.88
  6. Step 6: Final answer
    x = 2,939.07

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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.