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Finding the Fourth Proportional to 2,021.75, 2,790.05 and 1,183.05

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Solution

The fourth proportional to 2,021.75, 2,790.05 and 1,183.05 is: 1,632.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,021.75 : 2,790.05 = 1,183.05 : x
  2. Step 2: Convert to fraction form
    2,021.75/2,790.05 = 1,183.05/x
  3. Step 3: Cross multiply
    2,021.75x = 2,790.05 × 1,183.05
  4. Step 4: Simplify right side
    2,021.75x = 3,300,762.74
  5. Step 5: Solve for x
    x = 3,300,762.74/2,021.75
  6. Step 6: Final answer
    x = 1,632.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.