Home / 2,768.20-3,818.42-2,021.26

Finding the Fourth Proportional to 2,768.20, 3,818.42 and 2,021.26

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Solution

The fourth proportional to 2,768.20, 3,818.42 and 2,021.26 is: 2,788.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,768.20 : 3,818.42 = 2,021.26 : x
  2. Step 2: Convert to fraction form
    2,768.20/3,818.42 = 2,021.26/x
  3. Step 3: Cross multiply
    2,768.20x = 3,818.42 × 2,021.26
  4. Step 4: Simplify right side
    2,768.20x = 7,718,019.61
  5. Step 5: Solve for x
    x = 7,718,019.61/2,768.20
  6. Step 6: Final answer
    x = 2,788.10

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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.