Home / 3,928.72-5,889.88-2,173.66

Finding the Fourth Proportional to 3,928.72, 5,889.88 and 2,173.66

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Solution

The fourth proportional to 3,928.72, 5,889.88 and 2,173.66 is: 3,258.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,928.72 : 5,889.88 = 2,173.66 : x
  2. Step 2: Convert to fraction form
    3,928.72/5,889.88 = 2,173.66/x
  3. Step 3: Cross multiply
    3,928.72x = 5,889.88 × 2,173.66
  4. Step 4: Simplify right side
    3,928.72x = 12,802,596.56
  5. Step 5: Solve for x
    x = 12,802,596.56/3,928.72
  6. Step 6: Final answer
    x = 3,258.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.