Home / 2,021.91-2,790.49-1,137.88

Finding the Fourth Proportional to 2,021.91, 2,790.49 and 1,137.88

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Solution

The fourth proportional to 2,021.91, 2,790.49 and 1,137.88 is: 1,570.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,021.91 : 2,790.49 = 1,137.88 : x
  2. Step 2: Convert to fraction form
    2,021.91/2,790.49 = 1,137.88/x
  3. Step 3: Cross multiply
    2,021.91x = 2,790.49 × 1,137.88
  4. Step 4: Simplify right side
    2,021.91x = 3,175,242.76
  5. Step 5: Solve for x
    x = 3,175,242.76/2,021.91
  6. Step 6: Final answer
    x = 1,570.42

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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.