Home / 2,138.46-3,205.79-1,151.81

Finding the Fourth Proportional to 2,138.46, 3,205.79 and 1,151.81

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Solution

The fourth proportional to 2,138.46, 3,205.79 and 1,151.81 is: 1,726.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,138.46 : 3,205.79 = 1,151.81 : x
  2. Step 2: Convert to fraction form
    2,138.46/3,205.79 = 1,151.81/x
  3. Step 3: Cross multiply
    2,138.46x = 3,205.79 × 1,151.81
  4. Step 4: Simplify right side
    2,138.46x = 3,692,460.98
  5. Step 5: Solve for x
    x = 3,692,460.98/2,138.46
  6. Step 6: Final answer
    x = 1,726.69

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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.