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Finding the Fourth Proportional to 2,185.26, 3,278 and 798.58

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Solution

The fourth proportional to 2,185.26, 3,278 and 798.58 is: 1,197.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,185.26 : 3,278 = 798.58 : x
  2. Step 2: Convert to fraction form
    2,185.26/3,278 = 798.58/x
  3. Step 3: Cross multiply
    2,185.26x = 3,278 × 798.58
  4. Step 4: Simplify right side
    2,185.26x = 2,617,745.24
  5. Step 5: Solve for x
    x = 2,617,745.24/2,185.26
  6. Step 6: Final answer
    x = 1,197.91

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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.