Home / 2,117.20-3,175.80-884.61

Finding the Fourth Proportional to 2,117.20, 3,175.80 and 884.61

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Solution

The fourth proportional to 2,117.20, 3,175.80 and 884.61 is: 1,326.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,117.20 : 3,175.80 = 884.61 : x
  2. Step 2: Convert to fraction form
    2,117.20/3,175.80 = 884.61/x
  3. Step 3: Cross multiply
    2,117.20x = 3,175.80 × 884.61
  4. Step 4: Simplify right side
    2,117.20x = 2,809,344.44
  5. Step 5: Solve for x
    x = 2,809,344.44/2,117.20
  6. Step 6: Final answer
    x = 1,326.92

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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.