Home / 5,845-8,767.42-2,145.78

Finding the Fourth Proportional to 5,845, 8,767.42 and 2,145.78

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Solution

The fourth proportional to 5,845, 8,767.42 and 2,145.78 is: 3,218.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,845 : 8,767.42 = 2,145.78 : x
  2. Step 2: Convert to fraction form
    5,845/8,767.42 = 2,145.78/x
  3. Step 3: Cross multiply
    5,845x = 8,767.42 × 2,145.78
  4. Step 4: Simplify right side
    5,845x = 18,812,954.49
  5. Step 5: Solve for x
    x = 18,812,954.49/5,845
  6. Step 6: Final answer
    x = 3,218.64

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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.