Home / 3,811.10-5,718.47-2,146.55

Finding the Fourth Proportional to 3,811.10, 5,718.47 and 2,146.55

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Solution

The fourth proportional to 3,811.10, 5,718.47 and 2,146.55 is: 3,220.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,811.10 : 5,718.47 = 2,146.55 : x
  2. Step 2: Convert to fraction form
    3,811.10/5,718.47 = 2,146.55/x
  3. Step 3: Cross multiply
    3,811.10x = 5,718.47 × 2,146.55
  4. Step 4: Simplify right side
    3,811.10x = 12,274,942.45
  5. Step 5: Solve for x
    x = 12,274,942.45/3,811.10
  6. Step 6: Final answer
    x = 3,220.84

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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.