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Finding the Fourth Proportional to 2,606.03, 3,909 and 658.22

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Solution

The fourth proportional to 2,606.03, 3,909 and 658.22 is: 987.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,606.03 : 3,909 = 658.22 : x
  2. Step 2: Convert to fraction form
    2,606.03/3,909 = 658.22/x
  3. Step 3: Cross multiply
    2,606.03x = 3,909 × 658.22
  4. Step 4: Simplify right side
    2,606.03x = 2,572,981.98
  5. Step 5: Solve for x
    x = 2,572,981.98/2,606.03
  6. Step 6: Final answer
    x = 987.32

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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.