Home / 3,181.90-4,391.22-1,784.62

Finding the Fourth Proportional to 3,181.90, 4,391.22 and 1,784.62

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Solution

The fourth proportional to 3,181.90, 4,391.22 and 1,784.62 is: 2,462.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,181.90 : 4,391.22 = 1,784.62 : x
  2. Step 2: Convert to fraction form
    3,181.90/4,391.22 = 1,784.62/x
  3. Step 3: Cross multiply
    3,181.90x = 4,391.22 × 1,784.62
  4. Step 4: Simplify right side
    3,181.90x = 7,836,659.04
  5. Step 5: Solve for x
    x = 7,836,659.04/3,181.90
  6. Step 6: Final answer
    x = 2,462.89

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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.