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Finding the Fourth Proportional to 2,699.66, 3,725.42 and 1,520.68

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Solution

The fourth proportional to 2,699.66, 3,725.42 and 1,520.68 is: 2,098.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,699.66 : 3,725.42 = 1,520.68 : x
  2. Step 2: Convert to fraction form
    2,699.66/3,725.42 = 1,520.68/x
  3. Step 3: Cross multiply
    2,699.66x = 3,725.42 × 1,520.68
  4. Step 4: Simplify right side
    2,699.66x = 5,665,171.69
  5. Step 5: Solve for x
    x = 5,665,171.69/2,699.66
  6. Step 6: Final answer
    x = 2,098.48

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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.