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Finding the Fourth Proportional to 3,706.92, 5,117.41 and 2,865.72

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Solution

The fourth proportional to 3,706.92, 5,117.41 and 2,865.72 is: 3,956.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,706.92 : 5,117.41 = 2,865.72 : x
  2. Step 2: Convert to fraction form
    3,706.92/5,117.41 = 2,865.72/x
  3. Step 3: Cross multiply
    3,706.92x = 5,117.41 × 2,865.72
  4. Step 4: Simplify right side
    3,706.92x = 14,665,064.19
  5. Step 5: Solve for x
    x = 14,665,064.19/3,706.92
  6. Step 6: Final answer
    x = 3,956.13

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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.