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Finding the Fourth Proportional to 3,689.96, 5,092.24 and 2,117.94

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Solution

The fourth proportional to 3,689.96, 5,092.24 and 2,117.94 is: 2,922.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,689.96 : 5,092.24 = 2,117.94 : x
  2. Step 2: Convert to fraction form
    3,689.96/5,092.24 = 2,117.94/x
  3. Step 3: Cross multiply
    3,689.96x = 5,092.24 × 2,117.94
  4. Step 4: Simplify right side
    3,689.96x = 10,785,058.79
  5. Step 5: Solve for x
    x = 10,785,058.79/3,689.96
  6. Step 6: Final answer
    x = 2,922.81

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1.5x scale

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.