Home / 1,914.36-2,640.51-1,205.52

Finding the Fourth Proportional to 1,914.36, 2,640.51 and 1,205.52

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Solution

The fourth proportional to 1,914.36, 2,640.51 and 1,205.52 is: 1,662.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,914.36 : 2,640.51 = 1,205.52 : x
  2. Step 2: Convert to fraction form
    1,914.36/2,640.51 = 1,205.52/x
  3. Step 3: Cross multiply
    1,914.36x = 2,640.51 × 1,205.52
  4. Step 4: Simplify right side
    1,914.36x = 3,183,187.62
  5. Step 5: Solve for x
    x = 3,183,187.62/1,914.36
  6. Step 6: Final answer
    x = 1,662.79

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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.