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Finding the Fourth Proportional to 5,356.18, 8,034.27 and 1,891

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Solution

The fourth proportional to 5,356.18, 8,034.27 and 1,891 is: 2,836.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,356.18 : 8,034.27 = 1,891 : x
  2. Step 2: Convert to fraction form
    5,356.18/8,034.27 = 1,891/x
  3. Step 3: Cross multiply
    5,356.18x = 8,034.27 × 1,891
  4. Step 4: Simplify right side
    5,356.18x = 15,192,804.57
  5. Step 5: Solve for x
    x = 15,192,804.57/5,356.18
  6. Step 6: Final answer
    x = 2,836.50

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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.