Home / 3,861.09-5,791.58-1,228.76

Finding the Fourth Proportional to 3,861.09, 5,791.58 and 1,228.76

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Solution

The fourth proportional to 3,861.09, 5,791.58 and 1,228.76 is: 1,843.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,861.09 : 5,791.58 = 1,228.76 : x
  2. Step 2: Convert to fraction form
    3,861.09/5,791.58 = 1,228.76/x
  3. Step 3: Cross multiply
    3,861.09x = 5,791.58 × 1,228.76
  4. Step 4: Simplify right side
    3,861.09x = 7,116,449.24
  5. Step 5: Solve for x
    x = 7,116,449.24/3,861.09
  6. Step 6: Final answer
    x = 1,843.12

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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.