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Finding the Fourth Proportional to 2,422.53, 3,634.39 and 779.24

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Solution

The fourth proportional to 2,422.53, 3,634.39 and 779.24 is: 1,169.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,422.53 : 3,634.39 = 779.24 : x
  2. Step 2: Convert to fraction form
    2,422.53/3,634.39 = 779.24/x
  3. Step 3: Cross multiply
    2,422.53x = 3,634.39 × 779.24
  4. Step 4: Simplify right side
    2,422.53x = 2,832,062.06
  5. Step 5: Solve for x
    x = 2,832,062.06/2,422.53
  6. Step 6: Final answer
    x = 1,169.05

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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.