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Finding the Fourth Proportional to 1,747.05, 2,620.58 and 822.61

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Solution

The fourth proportional to 1,747.05, 2,620.58 and 822.61 is: 1,233.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,747.05 : 2,620.58 = 822.61 : x
  2. Step 2: Convert to fraction form
    1,747.05/2,620.58 = 822.61/x
  3. Step 3: Cross multiply
    1,747.05x = 2,620.58 × 822.61
  4. Step 4: Simplify right side
    1,747.05x = 2,155,704.65
  5. Step 5: Solve for x
    x = 2,155,704.65/1,747.05
  6. Step 6: Final answer
    x = 1,233.91

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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.