Home / 3,630.37-5,439.30-1,988.09

Finding the Fourth Proportional to 3,630.37, 5,439.30 and 1,988.09

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Solution

The fourth proportional to 3,630.37, 5,439.30 and 1,988.09 is: 2,978.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,630.37 : 5,439.30 = 1,988.09 : x
  2. Step 2: Convert to fraction form
    3,630.37/5,439.30 = 1,988.09/x
  3. Step 3: Cross multiply
    3,630.37x = 5,439.30 × 1,988.09
  4. Step 4: Simplify right side
    3,630.37x = 10,813,817.94
  5. Step 5: Solve for x
    x = 10,813,817.94/3,630.37
  6. Step 6: Final answer
    x = 2,978.71

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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.