Home / 3,845.63-5,767.91-1,380.09

Finding the Fourth Proportional to 3,845.63, 5,767.91 and 1,380.09

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Solution

The fourth proportional to 3,845.63, 5,767.91 and 1,380.09 is: 2,069.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,845.63 : 5,767.91 = 1,380.09 : x
  2. Step 2: Convert to fraction form
    3,845.63/5,767.91 = 1,380.09/x
  3. Step 3: Cross multiply
    3,845.63x = 5,767.91 × 1,380.09
  4. Step 4: Simplify right side
    3,845.63x = 7,960,222.37
  5. Step 5: Solve for x
    x = 7,960,222.37/3,845.63
  6. Step 6: Final answer
    x = 2,069.94

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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.