Home / 5,382.25-7,426.69-3,144.22

Finding the Fourth Proportional to 5,382.25, 7,426.69 and 3,144.22

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Solution

The fourth proportional to 5,382.25, 7,426.69 and 3,144.22 is: 4,338.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,382.25 : 7,426.69 = 3,144.22 : x
  2. Step 2: Convert to fraction form
    5,382.25/7,426.69 = 3,144.22/x
  3. Step 3: Cross multiply
    5,382.25x = 7,426.69 × 3,144.22
  4. Step 4: Simplify right side
    5,382.25x = 23,351,120.80
  5. Step 5: Solve for x
    x = 23,351,120.80/5,382.25
  6. Step 6: Final answer
    x = 4,338.54

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Double scale
Find fourth proportional to 5,383.25, 7,428.07 and 3,145.22
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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.