Home / 1,571.91-2,169.38-982.33

Finding the Fourth Proportional to 1,571.91, 2,169.38 and 982.33

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Solution

The fourth proportional to 1,571.91, 2,169.38 and 982.33 is: 1,355.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,571.91 : 2,169.38 = 982.33 : x
  2. Step 2: Convert to fraction form
    1,571.91/2,169.38 = 982.33/x
  3. Step 3: Cross multiply
    1,571.91x = 2,169.38 × 982.33
  4. Step 4: Simplify right side
    1,571.91x = 2,131,044.09
  5. Step 5: Solve for x
    x = 2,131,044.09/1,571.91
  6. Step 6: Final answer
    x = 1,355.71

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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.