Home / 2,005.66-2,768.49-1,378.27

Finding the Fourth Proportional to 2,005.66, 2,768.49 and 1,378.27

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Solution

The fourth proportional to 2,005.66, 2,768.49 and 1,378.27 is: 1,902.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,005.66 : 2,768.49 = 1,378.27 : x
  2. Step 2: Convert to fraction form
    2,005.66/2,768.49 = 1,378.27/x
  3. Step 3: Cross multiply
    2,005.66x = 2,768.49 × 1,378.27
  4. Step 4: Simplify right side
    2,005.66x = 3,815,716.54
  5. Step 5: Solve for x
    x = 3,815,716.54/2,005.66
  6. Step 6: Final answer
    x = 1,902.47

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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.