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Finding the Fourth Proportional to 2,657.90, 3,982.08 and 1,486.53

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Solution

The fourth proportional to 2,657.90, 3,982.08 and 1,486.53 is: 2,227.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,657.90 : 3,982.08 = 1,486.53 : x
  2. Step 2: Convert to fraction form
    2,657.90/3,982.08 = 1,486.53/x
  3. Step 3: Cross multiply
    2,657.90x = 3,982.08 × 1,486.53
  4. Step 4: Simplify right side
    2,657.90x = 5,919,481.38
  5. Step 5: Solve for x
    x = 5,919,481.38/2,657.90
  6. Step 6: Final answer
    x = 2,227.13

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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.