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Finding the Fourth Proportional to 3,908.56, 5,862.93 and 1,960.78

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Solution

The fourth proportional to 3,908.56, 5,862.93 and 1,960.78 is: 2,941.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,908.56 : 5,862.93 = 1,960.78 : x
  2. Step 2: Convert to fraction form
    3,908.56/5,862.93 = 1,960.78/x
  3. Step 3: Cross multiply
    3,908.56x = 5,862.93 × 1,960.78
  4. Step 4: Simplify right side
    3,908.56x = 11,495,915.89
  5. Step 5: Solve for x
    x = 11,495,915.89/3,908.56
  6. Step 6: Final answer
    x = 2,941.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.