Home / 6,121.70-9,181.62-1,961.27

Finding the Fourth Proportional to 6,121.70, 9,181.62 and 1,961.27

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Solution

The fourth proportional to 6,121.70, 9,181.62 and 1,961.27 is: 2,941.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,121.70 : 9,181.62 = 1,961.27 : x
  2. Step 2: Convert to fraction form
    6,121.70/9,181.62 = 1,961.27/x
  3. Step 3: Cross multiply
    6,121.70x = 9,181.62 × 1,961.27
  4. Step 4: Simplify right side
    6,121.70x = 18,007,594.85
  5. Step 5: Solve for x
    x = 18,007,594.85/6,121.70
  6. Step 6: Final answer
    x = 2,941.60

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1.5x scale

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.