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Finding the Fourth Proportional to 2,699.83, 4,049.70 and 751.87

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Solution

The fourth proportional to 2,699.83, 4,049.70 and 751.87 is: 1,127.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,699.83 : 4,049.70 = 751.87 : x
  2. Step 2: Convert to fraction form
    2,699.83/4,049.70 = 751.87/x
  3. Step 3: Cross multiply
    2,699.83x = 4,049.70 × 751.87
  4. Step 4: Simplify right side
    2,699.83x = 3,044,847.94
  5. Step 5: Solve for x
    x = 3,044,847.94/2,699.83
  6. Step 6: Final answer
    x = 1,127.79

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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.