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Finding the Fourth Proportional to 1,935.94, 2,908.54 and 1,243.96

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Solution

The fourth proportional to 1,935.94, 2,908.54 and 1,243.96 is: 1,868.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,935.94 : 2,908.54 = 1,243.96 : x
  2. Step 2: Convert to fraction form
    1,935.94/2,908.54 = 1,243.96/x
  3. Step 3: Cross multiply
    1,935.94x = 2,908.54 × 1,243.96
  4. Step 4: Simplify right side
    1,935.94x = 3,618,107.42
  5. Step 5: Solve for x
    x = 3,618,107.42/1,935.94
  6. Step 6: Final answer
    x = 1,868.92

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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.