Home / 3,571.35-5,356.49-1,379.80

Finding the Fourth Proportional to 3,571.35, 5,356.49 and 1,379.80

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Solution

The fourth proportional to 3,571.35, 5,356.49 and 1,379.80 is: 2,069.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,571.35 : 5,356.49 = 1,379.80 : x
  2. Step 2: Convert to fraction form
    3,571.35/5,356.49 = 1,379.80/x
  3. Step 3: Cross multiply
    3,571.35x = 5,356.49 × 1,379.80
  4. Step 4: Simplify right side
    3,571.35x = 7,390,884.90
  5. Step 5: Solve for x
    x = 7,390,884.90/3,571.35
  6. Step 6: Final answer
    x = 2,069.49

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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.