Home / 3,571.61-4,928.76-1,999.67

Finding the Fourth Proportional to 3,571.61, 4,928.76 and 1,999.67

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Solution

The fourth proportional to 3,571.61, 4,928.76 and 1,999.67 is: 2,759.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,571.61 : 4,928.76 = 1,999.67 : x
  2. Step 2: Convert to fraction form
    3,571.61/4,928.76 = 1,999.67/x
  3. Step 3: Cross multiply
    3,571.61x = 4,928.76 × 1,999.67
  4. Step 4: Simplify right side
    3,571.61x = 9,855,868.87
  5. Step 5: Solve for x
    x = 9,855,868.87/3,571.61
  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.