Home / 2,839.95-3,919.15-1,581.07

Finding the Fourth Proportional to 2,839.95, 3,919.15 and 1,581.07

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Solution

The fourth proportional to 2,839.95, 3,919.15 and 1,581.07 is: 2,181.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,839.95 : 3,919.15 = 1,581.07 : x
  2. Step 2: Convert to fraction form
    2,839.95/3,919.15 = 1,581.07/x
  3. Step 3: Cross multiply
    2,839.95x = 3,919.15 × 1,581.07
  4. Step 4: Simplify right side
    2,839.95x = 6,196,450.49
  5. Step 5: Solve for x
    x = 6,196,450.49/2,839.95
  6. Step 6: Final answer
    x = 2,181.89

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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.