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Finding the Fourth Proportional to 2,965.59, 4,092.17 and 1,639.13

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Solution

The fourth proportional to 2,965.59, 4,092.17 and 1,639.13 is: 2,261.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,965.59 : 4,092.17 = 1,639.13 : x
  2. Step 2: Convert to fraction form
    2,965.59/4,092.17 = 1,639.13/x
  3. Step 3: Cross multiply
    2,965.59x = 4,092.17 × 1,639.13
  4. Step 4: Simplify right side
    2,965.59x = 6,707,569.96
  5. Step 5: Solve for x
    x = 6,707,569.96/2,965.59
  6. Step 6: Final answer
    x = 2,261.80

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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.