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Finding the Fourth Proportional to 2,582.18, 3,872.09 and 826.85

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Solution

The fourth proportional to 2,582.18, 3,872.09 and 826.85 is: 1,239.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,582.18 : 3,872.09 = 826.85 : x
  2. Step 2: Convert to fraction form
    2,582.18/3,872.09 = 826.85/x
  3. Step 3: Cross multiply
    2,582.18x = 3,872.09 × 826.85
  4. Step 4: Simplify right side
    2,582.18x = 3,201,620.32
  5. Step 5: Solve for x
    x = 3,201,620.32/2,582.18
  6. Step 6: Final answer
    x = 1,239.89

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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.