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Finding the Fourth Proportional to 2,414.81, 3,623.03 and 771.59

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Solution

The fourth proportional to 2,414.81, 3,623.03 and 771.59 is: 1,157.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,414.81 : 3,623.03 = 771.59 : x
  2. Step 2: Convert to fraction form
    2,414.81/3,623.03 = 771.59/x
  3. Step 3: Cross multiply
    2,414.81x = 3,623.03 × 771.59
  4. Step 4: Simplify right side
    2,414.81x = 2,795,489.86
  5. Step 5: Solve for x
    x = 2,795,489.86/2,414.81
  6. Step 6: Final answer
    x = 1,157.64

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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.