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Finding the Fourth Proportional to 3,967.84, 5,975.35 and 2,879.79

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Solution

The fourth proportional to 3,967.84, 5,975.35 and 2,879.79 is: 4,336.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,967.84 : 5,975.35 = 2,879.79 : x
  2. Step 2: Convert to fraction form
    3,967.84/5,975.35 = 2,879.79/x
  3. Step 3: Cross multiply
    3,967.84x = 5,975.35 × 2,879.79
  4. Step 4: Simplify right side
    3,967.84x = 17,207,753.18
  5. Step 5: Solve for x
    x = 17,207,753.18/3,967.84
  6. Step 6: Final answer
    x = 4,336.81

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.