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Finding the Fourth Proportional to 5,251.84, 7,879.92 and 2,943.28

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Solution

The fourth proportional to 5,251.84, 7,879.92 and 2,943.28 is: 4,416.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,251.84 : 7,879.92 = 2,943.28 : x
  2. Step 2: Convert to fraction form
    5,251.84/7,879.92 = 2,943.28/x
  3. Step 3: Cross multiply
    5,251.84x = 7,879.92 × 2,943.28
  4. Step 4: Simplify right side
    5,251.84x = 23,192,810.94
  5. Step 5: Solve for x
    x = 23,192,810.94/5,251.84
  6. Step 6: Final answer
    x = 4,416.13

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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.