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Finding the Fourth Proportional to 2,618.67, 3,615 and 1,662.06

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Solution

The fourth proportional to 2,618.67, 3,615 and 1,662.06 is: 2,294.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,618.67 : 3,615 = 1,662.06 : x
  2. Step 2: Convert to fraction form
    2,618.67/3,615 = 1,662.06/x
  3. Step 3: Cross multiply
    2,618.67x = 3,615 × 1,662.06
  4. Step 4: Simplify right side
    2,618.67x = 6,008,346.90
  5. Step 5: Solve for x
    x = 6,008,346.90/2,618.67
  6. Step 6: Final answer
    x = 2,294.43

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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.