Home / 3,571.61-4,928.81-1,999.70

Finding the Fourth Proportional to 3,571.61, 4,928.81 and 1,999.70

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Solution

The fourth proportional to 3,571.61, 4,928.81 and 1,999.70 is: 2,759.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,571.61 : 4,928.81 = 1,999.70 : x
  2. Step 2: Convert to fraction form
    3,571.61/4,928.81 = 1,999.70/x
  3. Step 3: Cross multiply
    3,571.61x = 4,928.81 × 1,999.70
  4. Step 4: Simplify right side
    3,571.61x = 9,856,106.71
  5. Step 5: Solve for x
    x = 9,856,106.71/3,571.61
  6. Step 6: Final answer
    x = 2,759.57

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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.