Home / 3,213.30-4,829.55-2,790.90

Finding the Fourth Proportional to 3,213.30, 4,829.55 and 2,790.90

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Solution

The fourth proportional to 3,213.30, 4,829.55 and 2,790.90 is: 4,194.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,213.30 : 4,829.55 = 2,790.90 : x
  2. Step 2: Convert to fraction form
    3,213.30/4,829.55 = 2,790.90/x
  3. Step 3: Cross multiply
    3,213.30x = 4,829.55 × 2,790.90
  4. Step 4: Simplify right side
    3,213.30x = 13,478,791.10
  5. Step 5: Solve for x
    x = 13,478,791.10/3,213.30
  6. Step 6: Final answer
    x = 4,194.69

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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.