Home / 2,768.11-3,819.85-1,509.17

Finding the Fourth Proportional to 2,768.11, 3,819.85 and 1,509.17

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Solution

The fourth proportional to 2,768.11, 3,819.85 and 1,509.17 is: 2,082.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,768.11 : 3,819.85 = 1,509.17 : x
  2. Step 2: Convert to fraction form
    2,768.11/3,819.85 = 1,509.17/x
  3. Step 3: Cross multiply
    2,768.11x = 3,819.85 × 1,509.17
  4. Step 4: Simplify right side
    2,768.11x = 5,764,780.15
  5. Step 5: Solve for x
    x = 5,764,780.15/2,768.11
  6. Step 6: Final answer
    x = 2,082.57

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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.