Home / 2,821.21-3,894.36-2,525.97

Finding the Fourth Proportional to 2,821.21, 3,894.36 and 2,525.97

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Solution

The fourth proportional to 2,821.21, 3,894.36 and 2,525.97 is: 3,486.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,821.21 : 3,894.36 = 2,525.97 : x
  2. Step 2: Convert to fraction form
    2,821.21/3,894.36 = 2,525.97/x
  3. Step 3: Cross multiply
    2,821.21x = 3,894.36 × 2,525.97
  4. Step 4: Simplify right side
    2,821.21x = 9,837,017.06
  5. Step 5: Solve for x
    x = 9,837,017.06/2,821.21
  6. Step 6: Final answer
    x = 3,486.81

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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.