Home / 3,891.40-5,833.44-1,941.76

Finding the Fourth Proportional to 3,891.40, 5,833.44 and 1,941.76

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Solution

The fourth proportional to 3,891.40, 5,833.44 and 1,941.76 is: 2,910.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,891.40 : 5,833.44 = 1,941.76 : x
  2. Step 2: Convert to fraction form
    3,891.40/5,833.44 = 1,941.76/x
  3. Step 3: Cross multiply
    3,891.40x = 5,833.44 × 1,941.76
  4. Step 4: Simplify right side
    3,891.40x = 11,327,140.45
  5. Step 5: Solve for x
    x = 11,327,140.45/3,891.40
  6. Step 6: Final answer
    x = 2,910.81

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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.