Home / 2,286.29-3,429.59-987.75

Finding the Fourth Proportional to 2,286.29, 3,429.59 and 987.75

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Solution

The fourth proportional to 2,286.29, 3,429.59 and 987.75 is: 1,481.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,286.29 : 3,429.59 = 987.75 : x
  2. Step 2: Convert to fraction form
    2,286.29/3,429.59 = 987.75/x
  3. Step 3: Cross multiply
    2,286.29x = 3,429.59 × 987.75
  4. Step 4: Simplify right side
    2,286.29x = 3,387,572.58
  5. Step 5: Solve for x
    x = 3,387,572.58/2,286.29
  6. Step 6: Final answer
    x = 1,481.69

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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.