Home / 2,878.20-3,972.00-1,619.22

Finding the Fourth Proportional to 2,878.20, 3,972.00 and 1,619.22

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Solution

The fourth proportional to 2,878.20, 3,972.00 and 1,619.22 is: 2,234.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,878.20 : 3,972.00 = 1,619.22 : x
  2. Step 2: Convert to fraction form
    2,878.20/3,972.00 = 1,619.22/x
  3. Step 3: Cross multiply
    2,878.20x = 3,972.00 × 1,619.22
  4. Step 4: Simplify right side
    2,878.20x = 6,431,562.81
  5. Step 5: Solve for x
    x = 6,431,562.81/2,878.20
  6. Step 6: Final answer
    x = 2,234.58

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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.