Home / 1,981.57-2,976.99-1,160.41

Finding the Fourth Proportional to 1,981.57, 2,976.99 and 1,160.41

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Solution

The fourth proportional to 1,981.57, 2,976.99 and 1,160.41 is: 1,743.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,981.57 : 2,976.99 = 1,160.41 : x
  2. Step 2: Convert to fraction form
    1,981.57/2,976.99 = 1,160.41/x
  3. Step 3: Cross multiply
    1,981.57x = 2,976.99 × 1,160.41
  4. Step 4: Simplify right side
    1,981.57x = 3,454,528.97
  5. Step 5: Solve for x
    x = 3,454,528.97/1,981.57
  6. Step 6: Final answer
    x = 1,743.33

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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.