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Finding the Fourth Proportional to 2,439.82, 3,659.62 and 660.94

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Solution

The fourth proportional to 2,439.82, 3,659.62 and 660.94 is: 991.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,439.82 : 3,659.62 = 660.94 : x
  2. Step 2: Convert to fraction form
    2,439.82/3,659.62 = 660.94/x
  3. Step 3: Cross multiply
    2,439.82x = 3,659.62 × 660.94
  4. Step 4: Simplify right side
    2,439.82x = 2,418,789.24
  5. Step 5: Solve for x
    x = 2,418,789.24/2,439.82
  6. Step 6: Final answer
    x = 991.38

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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.