Home / 2,021.97-2,790.45-1,137.86

Finding the Fourth Proportional to 2,021.97, 2,790.45 and 1,137.86

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Solution

The fourth proportional to 2,021.97, 2,790.45 and 1,137.86 is: 1,570.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,021.97 : 2,790.45 = 1,137.86 : x
  2. Step 2: Convert to fraction form
    2,021.97/2,790.45 = 1,137.86/x
  3. Step 3: Cross multiply
    2,021.97x = 2,790.45 × 1,137.86
  4. Step 4: Simplify right side
    2,021.97x = 3,175,127.48
  5. Step 5: Solve for x
    x = 3,175,127.48/2,021.97
  6. Step 6: Final answer
    x = 1,570.31

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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.