Home / 6,121.13-9,181.49-1,961.37

Finding the Fourth Proportional to 6,121.13, 9,181.49 and 1,961.37

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Solution

The fourth proportional to 6,121.13, 9,181.49 and 1,961.37 is: 2,941.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,121.13 : 9,181.49 = 1,961.37 : x
  2. Step 2: Convert to fraction form
    6,121.13/9,181.49 = 1,961.37/x
  3. Step 3: Cross multiply
    6,121.13x = 9,181.49 × 1,961.37
  4. Step 4: Simplify right side
    6,121.13x = 18,008,289.23
  5. Step 5: Solve for x
    x = 18,008,289.23/6,121.13
  6. Step 6: Final answer
    x = 2,941.99

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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.