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Finding the Fourth Proportional to 1,922.84, 2,882.04 and 936.15

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Solution

The fourth proportional to 1,922.84, 2,882.04 and 936.15 is: 1,403.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,922.84 : 2,882.04 = 936.15 : x
  2. Step 2: Convert to fraction form
    1,922.84/2,882.04 = 936.15/x
  3. Step 3: Cross multiply
    1,922.84x = 2,882.04 × 936.15
  4. Step 4: Simplify right side
    1,922.84x = 2,698,021.75
  5. Step 5: Solve for x
    x = 2,698,021.75/1,922.84
  6. Step 6: Final answer
    x = 1,403.14

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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.