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Finding the Fourth Proportional to 1,974.09, 2,961.10 and 803.24

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Solution

The fourth proportional to 1,974.09, 2,961.10 and 803.24 is: 1,204.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,974.09 : 2,961.10 = 803.24 : x
  2. Step 2: Convert to fraction form
    1,974.09/2,961.10 = 803.24/x
  3. Step 3: Cross multiply
    1,974.09x = 2,961.10 × 803.24
  4. Step 4: Simplify right side
    1,974.09x = 2,378,473.96
  5. Step 5: Solve for x
    x = 2,378,473.96/1,974.09
  6. Step 6: Final answer
    x = 1,204.85

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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.