Home / 3,571.55-4,928.80-1,999.64

Finding the Fourth Proportional to 3,571.55, 4,928.80 and 1,999.64

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Solution

The fourth proportional to 3,571.55, 4,928.80 and 1,999.64 is: 2,759.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,571.55 : 4,928.80 = 1,999.64 : x
  2. Step 2: Convert to fraction form
    3,571.55/4,928.80 = 1,999.64/x
  3. Step 3: Cross multiply
    3,571.55x = 4,928.80 × 1,999.64
  4. Step 4: Simplify right side
    3,571.55x = 9,855,795.99
  5. Step 5: Solve for x
    x = 9,855,795.99/3,571.55
  6. Step 6: Final answer
    x = 2,759.53

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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.