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Finding the Fourth Proportional to 3,879.84, 5,816.32 and 1,414.16

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Solution

The fourth proportional to 3,879.84, 5,816.32 and 1,414.16 is: 2,119.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,879.84 : 5,816.32 = 1,414.16 : x
  2. Step 2: Convert to fraction form
    3,879.84/5,816.32 = 1,414.16/x
  3. Step 3: Cross multiply
    3,879.84x = 5,816.32 × 1,414.16
  4. Step 4: Simplify right side
    3,879.84x = 8,225,207.09
  5. Step 5: Solve for x
    x = 8,225,207.09/3,879.84
  6. Step 6: Final answer
    x = 2,119.99

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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.