Home / 1,396.14-2,093.57-1,286.70

Finding the Fourth Proportional to 1,396.14, 2,093.57 and 1,286.70

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Solution

The fourth proportional to 1,396.14, 2,093.57 and 1,286.70 is: 1,929.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,396.14 : 2,093.57 = 1,286.70 : x
  2. Step 2: Convert to fraction form
    1,396.14/2,093.57 = 1,286.70/x
  3. Step 3: Cross multiply
    1,396.14x = 2,093.57 × 1,286.70
  4. Step 4: Simplify right side
    1,396.14x = 2,693,790.09
  5. Step 5: Solve for x
    x = 2,693,790.09/1,396.14
  6. Step 6: Final answer
    x = 1,929.46

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1.5x scale

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.