Home / 2,839.90-3,919.75-1,895.74

Finding the Fourth Proportional to 2,839.90, 3,919.75 and 1,895.74

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Solution

The fourth proportional to 2,839.90, 3,919.75 and 1,895.74 is: 2,616.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,839.90 : 3,919.75 = 1,895.74 : x
  2. Step 2: Convert to fraction form
    2,839.90/3,919.75 = 1,895.74/x
  3. Step 3: Cross multiply
    2,839.90x = 3,919.75 × 1,895.74
  4. Step 4: Simplify right side
    2,839.90x = 7,430,826.87
  5. Step 5: Solve for x
    x = 7,430,826.87/2,839.90
  6. Step 6: Final answer
    x = 2,616.58

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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.