Home / 2,726.44-4,090.26-778.79

Finding the Fourth Proportional to 2,726.44, 4,090.26 and 778.79

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Solution

The fourth proportional to 2,726.44, 4,090.26 and 778.79 is: 1,168.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,726.44 : 4,090.26 = 778.79 : x
  2. Step 2: Convert to fraction form
    2,726.44/4,090.26 = 778.79/x
  3. Step 3: Cross multiply
    2,726.44x = 4,090.26 × 778.79
  4. Step 4: Simplify right side
    2,726.44x = 3,185,453.59
  5. Step 5: Solve for x
    x = 3,185,453.59/2,726.44
  6. Step 6: Final answer
    x = 1,168.36

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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.