Home / 3,387.33-5,079.78-1,438.88

Finding the Fourth Proportional to 3,387.33, 5,079.78 and 1,438.88

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Solution

The fourth proportional to 3,387.33, 5,079.78 and 1,438.88 is: 2,157.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,387.33 : 5,079.78 = 1,438.88 : x
  2. Step 2: Convert to fraction form
    3,387.33/5,079.78 = 1,438.88/x
  3. Step 3: Cross multiply
    3,387.33x = 5,079.78 × 1,438.88
  4. Step 4: Simplify right side
    3,387.33x = 7,309,168.45
  5. Step 5: Solve for x
    x = 7,309,168.45/3,387.33
  6. Step 6: Final answer
    x = 2,157.80

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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.