Home / 2,160.62-2,981.66-1,229.12

Finding the Fourth Proportional to 2,160.62, 2,981.66 and 1,229.12

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Solution

The fourth proportional to 2,160.62, 2,981.66 and 1,229.12 is: 1,696.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,160.62 : 2,981.66 = 1,229.12 : x
  2. Step 2: Convert to fraction form
    2,160.62/2,981.66 = 1,229.12/x
  3. Step 3: Cross multiply
    2,160.62x = 2,981.66 × 1,229.12
  4. Step 4: Simplify right side
    2,160.62x = 3,664,817.94
  5. Step 5: Solve for x
    x = 3,664,817.94/2,160.62
  6. Step 6: Final answer
    x = 1,696.19

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1.5x scale

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.