Home / 3,571.75-4,929.02-1,999.86

Finding the Fourth Proportional to 3,571.75, 4,929.02 and 1,999.86

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Solution

The fourth proportional to 3,571.75, 4,929.02 and 1,999.86 is: 2,759.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,571.75 : 4,929.02 = 1,999.86 : x
  2. Step 2: Convert to fraction form
    3,571.75/4,929.02 = 1,999.86/x
  3. Step 3: Cross multiply
    3,571.75x = 4,929.02 × 1,999.86
  4. Step 4: Simplify right side
    3,571.75x = 9,857,349.94
  5. Step 5: Solve for x
    x = 9,857,349.94/3,571.75
  6. Step 6: Final answer
    x = 2,759.81

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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.