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Finding the Fourth Proportional to 2,257.90, 3,387.93 and 797.38

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Solution

The fourth proportional to 2,257.90, 3,387.93 and 797.38 is: 1,196.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,257.90 : 3,387.93 = 797.38 : x
  2. Step 2: Convert to fraction form
    2,257.90/3,387.93 = 797.38/x
  3. Step 3: Cross multiply
    2,257.90x = 3,387.93 × 797.38
  4. Step 4: Simplify right side
    2,257.90x = 2,701,467.62
  5. Step 5: Solve for x
    x = 2,701,467.62/2,257.90
  6. Step 6: Final answer
    x = 1,196.45

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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.