Home / 3,188.72-4,399.98-1,863.56

Finding the Fourth Proportional to 3,188.72, 4,399.98 and 1,863.56

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Solution

The fourth proportional to 3,188.72, 4,399.98 and 1,863.56 is: 2,571.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,188.72 : 4,399.98 = 1,863.56 : x
  2. Step 2: Convert to fraction form
    3,188.72/4,399.98 = 1,863.56/x
  3. Step 3: Cross multiply
    3,188.72x = 4,399.98 × 1,863.56
  4. Step 4: Simplify right side
    3,188.72x = 8,199,626.73
  5. Step 5: Solve for x
    x = 8,199,626.73/3,188.72
  6. Step 6: Final answer
    x = 2,571.45

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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.