Home / 4,115.12-6,171.06-1,805

Finding the Fourth Proportional to 4,115.12, 6,171.06 and 1,805

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Solution

The fourth proportional to 4,115.12, 6,171.06 and 1,805 is: 2,706.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,115.12 : 6,171.06 = 1,805 : x
  2. Step 2: Convert to fraction form
    4,115.12/6,171.06 = 1,805/x
  3. Step 3: Cross multiply
    4,115.12x = 6,171.06 × 1,805
  4. Step 4: Simplify right side
    4,115.12x = 11,138,763.30
  5. Step 5: Solve for x
    x = 11,138,763.30/4,115.12
  6. Step 6: Final answer
    x = 2,706.79

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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.