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Finding the Fourth Proportional to 1,974.38, 2,961.88 and 741.88

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Solution

The fourth proportional to 1,974.38, 2,961.88 and 741.88 is: 1,112.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,974.38 : 2,961.88 = 741.88 : x
  2. Step 2: Convert to fraction form
    1,974.38/2,961.88 = 741.88/x
  3. Step 3: Cross multiply
    1,974.38x = 2,961.88 × 741.88
  4. Step 4: Simplify right side
    1,974.38x = 2,197,355.83
  5. Step 5: Solve for x
    x = 2,197,355.83/1,974.38
  6. Step 6: Final answer
    x = 1,112.94

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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.