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Finding the Fourth Proportional to 2,490.66, 3,734.22 and 1,173.71

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Solution

The fourth proportional to 2,490.66, 3,734.22 and 1,173.71 is: 1,759.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,490.66 : 3,734.22 = 1,173.71 : x
  2. Step 2: Convert to fraction form
    2,490.66/3,734.22 = 1,173.71/x
  3. Step 3: Cross multiply
    2,490.66x = 3,734.22 × 1,173.71
  4. Step 4: Simplify right side
    2,490.66x = 4,382,872.69
  5. Step 5: Solve for x
    x = 4,382,872.69/2,490.66
  6. Step 6: Final answer
    x = 1,759.72

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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.