Home / 3,628.28-5,442.42-1,438.55

Finding the Fourth Proportional to 3,628.28, 5,442.42 and 1,438.55

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Solution

The fourth proportional to 3,628.28, 5,442.42 and 1,438.55 is: 2,157.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,628.28 : 5,442.42 = 1,438.55 : x
  2. Step 2: Convert to fraction form
    3,628.28/5,442.42 = 1,438.55/x
  3. Step 3: Cross multiply
    3,628.28x = 5,442.42 × 1,438.55
  4. Step 4: Simplify right side
    3,628.28x = 7,829,193.29
  5. Step 5: Solve for x
    x = 7,829,193.29/3,628.28
  6. Step 6: Final answer
    x = 2,157.83

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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.