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Finding the Fourth Proportional to 3,482.10, 5,223.09 and 885

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Solution

The fourth proportional to 3,482.10, 5,223.09 and 885 is: 1,327.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,482.10 : 5,223.09 = 885 : x
  2. Step 2: Convert to fraction form
    3,482.10/5,223.09 = 885/x
  3. Step 3: Cross multiply
    3,482.10x = 5,223.09 × 885
  4. Step 4: Simplify right side
    3,482.10x = 4,622,434.65
  5. Step 5: Solve for x
    x = 4,622,434.65/3,482.10
  6. Step 6: Final answer
    x = 1,327.48

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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.