Home / 3,571.40-4,928.07-1,999.50

Finding the Fourth Proportional to 3,571.40, 4,928.07 and 1,999.50

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Solution

The fourth proportional to 3,571.40, 4,928.07 and 1,999.50 is: 2,759.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,571.40 : 4,928.07 = 1,999.50 : x
  2. Step 2: Convert to fraction form
    3,571.40/4,928.07 = 1,999.50/x
  3. Step 3: Cross multiply
    3,571.40x = 4,928.07 × 1,999.50
  4. Step 4: Simplify right side
    3,571.40x = 9,853,664.98
  5. Step 5: Solve for x
    x = 9,853,664.98/3,571.40
  6. Step 6: Final answer
    x = 2,759.05

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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.