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Finding the Fourth Proportional to 2,179.92, 3,007.29 and 1,295.22

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Solution

The fourth proportional to 2,179.92, 3,007.29 and 1,295.22 is: 1,786.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,179.92 : 3,007.29 = 1,295.22 : x
  2. Step 2: Convert to fraction form
    2,179.92/3,007.29 = 1,295.22/x
  3. Step 3: Cross multiply
    2,179.92x = 3,007.29 × 1,295.22
  4. Step 4: Simplify right side
    2,179.92x = 3,895,102.15
  5. Step 5: Solve for x
    x = 3,895,102.15/2,179.92
  6. Step 6: Final answer
    x = 1,786.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.