Home / 1,941.81-2,912.73-1,081.59

Finding the Fourth Proportional to 1,941.81, 2,912.73 and 1,081.59

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Solution

The fourth proportional to 1,941.81, 2,912.73 and 1,081.59 is: 1,622.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,941.81 : 2,912.73 = 1,081.59 : x
  2. Step 2: Convert to fraction form
    1,941.81/2,912.73 = 1,081.59/x
  3. Step 3: Cross multiply
    1,941.81x = 2,912.73 × 1,081.59
  4. Step 4: Simplify right side
    1,941.81x = 3,150,379.64
  5. Step 5: Solve for x
    x = 3,150,379.64/1,941.81
  6. Step 6: Final answer
    x = 1,622.39

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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.