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Finding the Fourth Proportional to 2,642.92, 3,963.70 and 793.56

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Solution

The fourth proportional to 2,642.92, 3,963.70 and 793.56 is: 1,190.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,642.92 : 3,963.70 = 793.56 : x
  2. Step 2: Convert to fraction form
    2,642.92/3,963.70 = 793.56/x
  3. Step 3: Cross multiply
    2,642.92x = 3,963.70 × 793.56
  4. Step 4: Simplify right side
    2,642.92x = 3,145,433.77
  5. Step 5: Solve for x
    x = 3,145,433.77/2,642.92
  6. Step 6: Final answer
    x = 1,190.14

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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.