Home / 2,726.28-4,091.31-1,428.66

Finding the Fourth Proportional to 2,726.28, 4,091.31 and 1,428.66

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Solution

The fourth proportional to 2,726.28, 4,091.31 and 1,428.66 is: 2,143.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,726.28 : 4,091.31 = 1,428.66 : x
  2. Step 2: Convert to fraction form
    2,726.28/4,091.31 = 1,428.66/x
  3. Step 3: Cross multiply
    2,726.28x = 4,091.31 × 1,428.66
  4. Step 4: Simplify right side
    2,726.28x = 5,845,090.94
  5. Step 5: Solve for x
    x = 5,845,090.94/2,726.28
  6. Step 6: Final answer
    x = 2,143.98

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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.