Home / 1,726.19-2,589.30-685.73

Finding the Fourth Proportional to 1,726.19, 2,589.30 and 685.73

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Solution

The fourth proportional to 1,726.19, 2,589.30 and 685.73 is: 1,028.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,726.19 : 2,589.30 = 685.73 : x
  2. Step 2: Convert to fraction form
    1,726.19/2,589.30 = 685.73/x
  3. Step 3: Cross multiply
    1,726.19x = 2,589.30 × 685.73
  4. Step 4: Simplify right side
    1,726.19x = 1,775,560.69
  5. Step 5: Solve for x
    x = 1,775,560.69/1,726.19
  6. Step 6: Final answer
    x = 1,028.60

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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.