Home / 2,726.40-4,090.92-1,264.80

Finding the Fourth Proportional to 2,726.40, 4,090.92 and 1,264.80

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Solution

The fourth proportional to 2,726.40, 4,090.92 and 1,264.80 is: 1,897.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,726.40 : 4,090.92 = 1,264.80 : x
  2. Step 2: Convert to fraction form
    2,726.40/4,090.92 = 1,264.80/x
  3. Step 3: Cross multiply
    2,726.40x = 4,090.92 × 1,264.80
  4. Step 4: Simplify right side
    2,726.40x = 5,174,195.62
  5. Step 5: Solve for x
    x = 5,174,195.62/2,726.40
  6. Step 6: Final answer
    x = 1,897.81

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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.