Home / 3,163.72-4,372.50-2,806.60

Finding the Fourth Proportional to 3,163.72, 4,372.50 and 2,806.60

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Solution

The fourth proportional to 3,163.72, 4,372.50 and 2,806.60 is: 3,878.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,163.72 : 4,372.50 = 2,806.60 : x
  2. Step 2: Convert to fraction form
    3,163.72/4,372.50 = 2,806.60/x
  3. Step 3: Cross multiply
    3,163.72x = 4,372.50 × 2,806.60
  4. Step 4: Simplify right side
    3,163.72x = 12,271,858.50
  5. Step 5: Solve for x
    x = 12,271,858.50/3,163.72
  6. Step 6: Final answer
    x = 3,878.93

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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.