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Finding the Fourth Proportional to 2,150.87, 3,226.01 and 763.83

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Solution

The fourth proportional to 2,150.87, 3,226.01 and 763.83 is: 1,145.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,150.87 : 3,226.01 = 763.83 : x
  2. Step 2: Convert to fraction form
    2,150.87/3,226.01 = 763.83/x
  3. Step 3: Cross multiply
    2,150.87x = 3,226.01 × 763.83
  4. Step 4: Simplify right side
    2,150.87x = 2,464,119.40
  5. Step 5: Solve for x
    x = 2,464,119.40/2,150.87
  6. Step 6: Final answer
    x = 1,145.64

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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.