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Finding the Fourth Proportional to 2,422.99, 3,634.49 and 779.68

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Solution

The fourth proportional to 2,422.99, 3,634.49 and 779.68 is: 1,169.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,422.99 : 3,634.49 = 779.68 : x
  2. Step 2: Convert to fraction form
    2,422.99/3,634.49 = 779.68/x
  3. Step 3: Cross multiply
    2,422.99x = 3,634.49 × 779.68
  4. Step 4: Simplify right side
    2,422.99x = 2,833,739.16
  5. Step 5: Solve for x
    x = 2,833,739.16/2,422.99
  6. Step 6: Final answer
    x = 1,169.52

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Similar ratio
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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.