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Finding the Fourth Proportional to 2,309.25, 3,462.85 and 665.42

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Solution

The fourth proportional to 2,309.25, 3,462.85 and 665.42 is: 997.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,309.25 : 3,462.85 = 665.42 : x
  2. Step 2: Convert to fraction form
    2,309.25/3,462.85 = 665.42/x
  3. Step 3: Cross multiply
    2,309.25x = 3,462.85 × 665.42
  4. Step 4: Simplify right side
    2,309.25x = 2,304,249.65
  5. Step 5: Solve for x
    x = 2,304,249.65/2,309.25
  6. Step 6: Final answer
    x = 997.83

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1.5x scale

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.