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Finding the Fourth Proportional to 1,942.53, 2,912.85 and 968.10

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Solution

The fourth proportional to 1,942.53, 2,912.85 and 968.10 is: 1,451.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,942.53 : 2,912.85 = 968.10 : x
  2. Step 2: Convert to fraction form
    1,942.53/2,912.85 = 968.10/x
  3. Step 3: Cross multiply
    1,942.53x = 2,912.85 × 968.10
  4. Step 4: Simplify right side
    1,942.53x = 2,819,930.09
  5. Step 5: Solve for x
    x = 2,819,930.09/1,942.53
  6. Step 6: Final answer
    x = 1,451.68

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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.