Home / 2,161.13-2,981.12-1,414.94

Finding the Fourth Proportional to 2,161.13, 2,981.12 and 1,414.94

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Solution

The fourth proportional to 2,161.13, 2,981.12 and 1,414.94 is: 1,951.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,161.13 : 2,981.12 = 1,414.94 : x
  2. Step 2: Convert to fraction form
    2,161.13/2,981.12 = 1,414.94/x
  3. Step 3: Cross multiply
    2,161.13x = 2,981.12 × 1,414.94
  4. Step 4: Simplify right side
    2,161.13x = 4,218,083.95
  5. Step 5: Solve for x
    x = 4,218,083.95/2,161.13
  6. Step 6: Final answer
    x = 1,951.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.