Home / 3,617.46-5,427-1,425.60

Finding the Fourth Proportional to 3,617.46, 5,427 and 1,425.60

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Solution

The fourth proportional to 3,617.46, 5,427 and 1,425.60 is: 2,138.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,617.46 : 5,427 = 1,425.60 : x
  2. Step 2: Convert to fraction form
    3,617.46/5,427 = 1,425.60/x
  3. Step 3: Cross multiply
    3,617.46x = 5,427 × 1,425.60
  4. Step 4: Simplify right side
    3,617.46x = 7,736,731.20
  5. Step 5: Solve for x
    x = 7,736,731.20/3,617.46
  6. Step 6: Final answer
    x = 2,138.72

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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.