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Finding the Fourth Proportional to 2,579.67, 3,869.72 and 824.91

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Solution

The fourth proportional to 2,579.67, 3,869.72 and 824.91 is: 1,237.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,579.67 : 3,869.72 = 824.91 : x
  2. Step 2: Convert to fraction form
    2,579.67/3,869.72 = 824.91/x
  3. Step 3: Cross multiply
    2,579.67x = 3,869.72 × 824.91
  4. Step 4: Simplify right side
    2,579.67x = 3,192,170.73
  5. Step 5: Solve for x
    x = 3,192,170.73/2,579.67
  6. Step 6: Final answer
    x = 1,237.43

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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.