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Finding the Fourth Proportional to 2,490.62, 3,729.96 and 1,448.42

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Solution

The fourth proportional to 2,490.62, 3,729.96 and 1,448.42 is: 2,169.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,490.62 : 3,729.96 = 1,448.42 : x
  2. Step 2: Convert to fraction form
    2,490.62/3,729.96 = 1,448.42/x
  3. Step 3: Cross multiply
    2,490.62x = 3,729.96 × 1,448.42
  4. Step 4: Simplify right side
    2,490.62x = 5,402,548.66
  5. Step 5: Solve for x
    x = 5,402,548.66/2,490.62
  6. Step 6: Final answer
    x = 2,169.16

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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.