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Finding the Fourth Proportional to 1,922.17, 2,882.72 and 751.93

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Solution

The fourth proportional to 1,922.17, 2,882.72 and 751.93 is: 1,127.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,922.17 : 2,882.72 = 751.93 : x
  2. Step 2: Convert to fraction form
    1,922.17/2,882.72 = 751.93/x
  3. Step 3: Cross multiply
    1,922.17x = 2,882.72 × 751.93
  4. Step 4: Simplify right side
    1,922.17x = 2,167,604.90
  5. Step 5: Solve for x
    x = 2,167,604.90/1,922.17
  6. Step 6: Final answer
    x = 1,127.69

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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.