Home / 2,103.76-3,154.42-1,324.95

Finding the Fourth Proportional to 2,103.76, 3,154.42 and 1,324.95

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Solution

The fourth proportional to 2,103.76, 3,154.42 and 1,324.95 is: 1,986.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,103.76 : 3,154.42 = 1,324.95 : x
  2. Step 2: Convert to fraction form
    2,103.76/3,154.42 = 1,324.95/x
  3. Step 3: Cross multiply
    2,103.76x = 3,154.42 × 1,324.95
  4. Step 4: Simplify right side
    2,103.76x = 4,179,448.78
  5. Step 5: Solve for x
    x = 4,179,448.78/2,103.76
  6. Step 6: Final answer
    x = 1,986.66

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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.