Home / 3,189.72-4,403.94-1,996.51

Finding the Fourth Proportional to 3,189.72, 4,403.94 and 1,996.51

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Solution

The fourth proportional to 3,189.72, 4,403.94 and 1,996.51 is: 2,756.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,189.72 : 4,403.94 = 1,996.51 : x
  2. Step 2: Convert to fraction form
    3,189.72/4,403.94 = 1,996.51/x
  3. Step 3: Cross multiply
    3,189.72x = 4,403.94 × 1,996.51
  4. Step 4: Simplify right side
    3,189.72x = 8,792,510.25
  5. Step 5: Solve for x
    x = 8,792,510.25/3,189.72
  6. Step 6: Final answer
    x = 2,756.51

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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.