Home / 1,458.38-2,186.35-726.95

Finding the Fourth Proportional to 1,458.38, 2,186.35 and 726.95

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Solution

The fourth proportional to 1,458.38, 2,186.35 and 726.95 is: 1,089.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,458.38 : 2,186.35 = 726.95 : x
  2. Step 2: Convert to fraction form
    1,458.38/2,186.35 = 726.95/x
  3. Step 3: Cross multiply
    1,458.38x = 2,186.35 × 726.95
  4. Step 4: Simplify right side
    1,458.38x = 1,589,367.13
  5. Step 5: Solve for x
    x = 1,589,367.13/1,458.38
  6. Step 6: Final answer
    x = 1,089.82

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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.