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Finding the Fourth Proportional to 5,891, 8,836.68 and 1,787

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Solution

The fourth proportional to 5,891, 8,836.68 and 1,787 is: 2,680.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,891 : 8,836.68 = 1,787 : x
  2. Step 2: Convert to fraction form
    5,891/8,836.68 = 1,787/x
  3. Step 3: Cross multiply
    5,891x = 8,836.68 × 1,787
  4. Step 4: Simplify right side
    5,891x = 15,791,147.16
  5. Step 5: Solve for x
    x = 15,791,147.16/5,891
  6. Step 6: Final answer
    x = 2,680.55

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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.