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Finding the Fourth Proportional to 1,922.94, 2,882.07 and 998.00

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Solution

The fourth proportional to 1,922.94, 2,882.07 and 998.00 is: 1,495.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,922.94 : 2,882.07 = 998.00 : x
  2. Step 2: Convert to fraction form
    1,922.94/2,882.07 = 998.00/x
  3. Step 3: Cross multiply
    1,922.94x = 2,882.07 × 998.00
  4. Step 4: Simplify right side
    1,922.94x = 2,876,291.45
  5. Step 5: Solve for x
    x = 2,876,291.45/1,922.94
  6. Step 6: Final answer
    x = 1,495.78

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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.