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Finding the Fourth Proportional to 2,965.72, 4,092.36 and 1,639.24

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Solution

The fourth proportional to 2,965.72, 4,092.36 and 1,639.24 is: 2,261.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,965.72 : 4,092.36 = 1,639.24 : x
  2. Step 2: Convert to fraction form
    2,965.72/4,092.36 = 1,639.24/x
  3. Step 3: Cross multiply
    2,965.72x = 4,092.36 × 1,639.24
  4. Step 4: Simplify right side
    2,965.72x = 6,708,360.21
  5. Step 5: Solve for x
    x = 6,708,360.21/2,965.72
  6. Step 6: Final answer
    x = 2,261.97

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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.