Home / 2,878.86-3,972.66-1,619.94

Finding the Fourth Proportional to 2,878.86, 3,972.66 and 1,619.94

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Solution

The fourth proportional to 2,878.86, 3,972.66 and 1,619.94 is: 2,235.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,878.86 : 3,972.66 = 1,619.94 : x
  2. Step 2: Convert to fraction form
    2,878.86/3,972.66 = 1,619.94/x
  3. Step 3: Cross multiply
    2,878.86x = 3,972.66 × 1,619.94
  4. Step 4: Simplify right side
    2,878.86x = 6,435,470.84
  5. Step 5: Solve for x
    x = 6,435,470.84/2,878.86
  6. Step 6: Final answer
    x = 2,235.42

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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.