Home / 3,251.07-4,485.32-1,991.67

Finding the Fourth Proportional to 3,251.07, 4,485.32 and 1,991.67

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Solution

The fourth proportional to 3,251.07, 4,485.32 and 1,991.67 is: 2,747.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,251.07 : 4,485.32 = 1,991.67 : x
  2. Step 2: Convert to fraction form
    3,251.07/4,485.32 = 1,991.67/x
  3. Step 3: Cross multiply
    3,251.07x = 4,485.32 × 1,991.67
  4. Step 4: Simplify right side
    3,251.07x = 8,933,267.33
  5. Step 5: Solve for x
    x = 8,933,267.33/3,251.07
  6. Step 6: Final answer
    x = 2,747.79

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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.