Home / 1,435.38-2,147.64-850.70

Finding the Fourth Proportional to 1,435.38, 2,147.64 and 850.70

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Solution

The fourth proportional to 1,435.38, 2,147.64 and 850.70 is: 1,272.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,435.38 : 2,147.64 = 850.70 : x
  2. Step 2: Convert to fraction form
    1,435.38/2,147.64 = 850.70/x
  3. Step 3: Cross multiply
    1,435.38x = 2,147.64 × 850.70
  4. Step 4: Simplify right side
    1,435.38x = 1,826,997.35
  5. Step 5: Solve for x
    x = 1,826,997.35/1,435.38
  6. Step 6: Final answer
    x = 1,272.83

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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.