Home / 3,620.94-5,426.09-2,138.64

Finding the Fourth Proportional to 3,620.94, 5,426.09 and 2,138.64

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Solution

The fourth proportional to 3,620.94, 5,426.09 and 2,138.64 is: 3,204.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,620.94 : 5,426.09 = 2,138.64 : x
  2. Step 2: Convert to fraction form
    3,620.94/5,426.09 = 2,138.64/x
  3. Step 3: Cross multiply
    3,620.94x = 5,426.09 × 2,138.64
  4. Step 4: Simplify right side
    3,620.94x = 11,604,430.10
  5. Step 5: Solve for x
    x = 11,604,430.10/3,620.94
  6. Step 6: Final answer
    x = 3,204.81

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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.