Home / 3,121.02-4,680.60-2,571.84

Finding the Fourth Proportional to 3,121.02, 4,680.60 and 2,571.84

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Solution

The fourth proportional to 3,121.02, 4,680.60 and 2,571.84 is: 3,856.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,121.02 : 4,680.60 = 2,571.84 : x
  2. Step 2: Convert to fraction form
    3,121.02/4,680.60 = 2,571.84/x
  3. Step 3: Cross multiply
    3,121.02x = 4,680.60 × 2,571.84
  4. Step 4: Simplify right side
    3,121.02x = 12,037,754.30
  5. Step 5: Solve for x
    x = 12,037,754.30/3,121.02
  6. Step 6: Final answer
    x = 3,856.99

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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.