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Finding the Fourth Proportional to 2,642.61, 3,964.11 and 793.68

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Solution

The fourth proportional to 2,642.61, 3,964.11 and 793.68 is: 1,190.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,642.61 : 3,964.11 = 793.68 : x
  2. Step 2: Convert to fraction form
    2,642.61/3,964.11 = 793.68/x
  3. Step 3: Cross multiply
    2,642.61x = 3,964.11 × 793.68
  4. Step 4: Simplify right side
    2,642.61x = 3,146,234.82
  5. Step 5: Solve for x
    x = 3,146,234.82/2,642.61
  6. Step 6: Final answer
    x = 1,190.58

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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.