Home / 2,839.35-3,919.68-1,895.70

Finding the Fourth Proportional to 2,839.35, 3,919.68 and 1,895.70

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Solution

The fourth proportional to 2,839.35, 3,919.68 and 1,895.70 is: 2,616.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,839.35 : 3,919.68 = 1,895.70 : x
  2. Step 2: Convert to fraction form
    2,839.35/3,919.68 = 1,895.70/x
  3. Step 3: Cross multiply
    2,839.35x = 3,919.68 × 1,895.70
  4. Step 4: Simplify right side
    2,839.35x = 7,430,537.38
  5. Step 5: Solve for x
    x = 7,430,537.38/2,839.35
  6. Step 6: Final answer
    x = 2,616.99

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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.