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Finding the Fourth Proportional to 2,658.15, 3,990.06 and 2,351.97

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Solution

The fourth proportional to 2,658.15, 3,990.06 and 2,351.97 is: 3,530.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,658.15 : 3,990.06 = 2,351.97 : x
  2. Step 2: Convert to fraction form
    2,658.15/3,990.06 = 2,351.97/x
  3. Step 3: Cross multiply
    2,658.15x = 3,990.06 × 2,351.97
  4. Step 4: Simplify right side
    2,658.15x = 9,384,501.42
  5. Step 5: Solve for x
    x = 9,384,501.42/2,658.15
  6. Step 6: Final answer
    x = 3,530.46

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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.