Home / 4,571.92-6,856.80-2,105.20

Finding the Fourth Proportional to 4,571.92, 6,856.80 and 2,105.20

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Solution

The fourth proportional to 4,571.92, 6,856.80 and 2,105.20 is: 3,157.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,571.92 : 6,856.80 = 2,105.20 : x
  2. Step 2: Convert to fraction form
    4,571.92/6,856.80 = 2,105.20/x
  3. Step 3: Cross multiply
    4,571.92x = 6,856.80 × 2,105.20
  4. Step 4: Simplify right side
    4,571.92x = 14,434,935.36
  5. Step 5: Solve for x
    x = 14,434,935.36/4,571.92
  6. Step 6: Final answer
    x = 3,157.30

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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.