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Finding the Fourth Proportional to 2,679.75, 3,699.68 and 1,749.87

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Solution

The fourth proportional to 2,679.75, 3,699.68 and 1,749.87 is: 2,415.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,679.75 : 3,699.68 = 1,749.87 : x
  2. Step 2: Convert to fraction form
    2,679.75/3,699.68 = 1,749.87/x
  3. Step 3: Cross multiply
    2,679.75x = 3,699.68 × 1,749.87
  4. Step 4: Simplify right side
    2,679.75x = 6,473,950.29
  5. Step 5: Solve for x
    x = 6,473,950.29/2,679.75
  6. Step 6: Final answer
    x = 2,415.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.