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Finding the Fourth Proportional to 3,942.81, 5,913.17 and 1,862.27

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Solution

The fourth proportional to 3,942.81, 5,913.17 and 1,862.27 is: 2,792.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,942.81 : 5,913.17 = 1,862.27 : x
  2. Step 2: Convert to fraction form
    3,942.81/5,913.17 = 1,862.27/x
  3. Step 3: Cross multiply
    3,942.81x = 5,913.17 × 1,862.27
  4. Step 4: Simplify right side
    3,942.81x = 11,011,880.22
  5. Step 5: Solve for x
    x = 11,011,880.22/3,942.81
  6. Step 6: Final answer
    x = 2,792.90

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1.5x scale

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.