Home / 3,571.52-4,928.80-1,999.60

Finding the Fourth Proportional to 3,571.52, 4,928.80 and 1,999.60

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Solution

The fourth proportional to 3,571.52, 4,928.80 and 1,999.60 is: 2,759.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,571.52 : 4,928.80 = 1,999.60 : x
  2. Step 2: Convert to fraction form
    3,571.52/4,928.80 = 1,999.60/x
  3. Step 3: Cross multiply
    3,571.52x = 4,928.80 × 1,999.60
  4. Step 4: Simplify right side
    3,571.52x = 9,855,628.48
  5. Step 5: Solve for x
    x = 9,855,628.48/3,571.52
  6. Step 6: Final answer
    x = 2,759.51

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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.