Home / 2,021.91-2,790.22-1,137.71

Finding the Fourth Proportional to 2,021.91, 2,790.22 and 1,137.71

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Solution

The fourth proportional to 2,021.91, 2,790.22 and 1,137.71 is: 1,570.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,021.91 : 2,790.22 = 1,137.71 : x
  2. Step 2: Convert to fraction form
    2,021.91/2,790.22 = 1,137.71/x
  3. Step 3: Cross multiply
    2,021.91x = 2,790.22 × 1,137.71
  4. Step 4: Simplify right side
    2,021.91x = 3,174,464.04
  5. Step 5: Solve for x
    x = 3,174,464.04/2,021.91
  6. Step 6: Final answer
    x = 1,570.04

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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.