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Finding the Fourth Proportional to 1,936.18, 2,904.36 and 961.66

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Solution

The fourth proportional to 1,936.18, 2,904.36 and 961.66 is: 1,442.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,936.18 : 2,904.36 = 961.66 : x
  2. Step 2: Convert to fraction form
    1,936.18/2,904.36 = 961.66/x
  3. Step 3: Cross multiply
    1,936.18x = 2,904.36 × 961.66
  4. Step 4: Simplify right side
    1,936.18x = 2,793,006.84
  5. Step 5: Solve for x
    x = 2,793,006.84/1,936.18
  6. Step 6: Final answer
    x = 1,442.53

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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.