Home / 3,620.09-5,428.31-1,768.43

Finding the Fourth Proportional to 3,620.09, 5,428.31 and 1,768.43

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Solution

The fourth proportional to 3,620.09, 5,428.31 and 1,768.43 is: 2,651.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,620.09 : 5,428.31 = 1,768.43 : x
  2. Step 2: Convert to fraction form
    3,620.09/5,428.31 = 1,768.43/x
  3. Step 3: Cross multiply
    3,620.09x = 5,428.31 × 1,768.43
  4. Step 4: Simplify right side
    3,620.09x = 9,599,550.27
  5. Step 5: Solve for x
    x = 9,599,550.27/3,620.09
  6. Step 6: Final answer
    x = 2,651.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.