Home / 2,028.74-2,799-1,189.17

Finding the Fourth Proportional to 2,028.74, 2,799 and 1,189.17

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Solution

The fourth proportional to 2,028.74, 2,799 and 1,189.17 is: 1,640.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,028.74 : 2,799 = 1,189.17 : x
  2. Step 2: Convert to fraction form
    2,028.74/2,799 = 1,189.17/x
  3. Step 3: Cross multiply
    2,028.74x = 2,799 × 1,189.17
  4. Step 4: Simplify right side
    2,028.74x = 3,328,486.83
  5. Step 5: Solve for x
    x = 3,328,486.83/2,028.74
  6. Step 6: Final answer
    x = 1,640.67

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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.