Home / 2,878.27-3,971.43-1,619.12

Finding the Fourth Proportional to 2,878.27, 3,971.43 and 1,619.12

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Solution

The fourth proportional to 2,878.27, 3,971.43 and 1,619.12 is: 2,234.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,878.27 : 3,971.43 = 1,619.12 : x
  2. Step 2: Convert to fraction form
    2,878.27/3,971.43 = 1,619.12/x
  3. Step 3: Cross multiply
    2,878.27x = 3,971.43 × 1,619.12
  4. Step 4: Simplify right side
    2,878.27x = 6,430,231.67
  5. Step 5: Solve for x
    x = 6,430,231.67/2,878.27
  6. Step 6: Final answer
    x = 2,234.06

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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.