Home / 2,814.46-3,879.83-1,972.62

Finding the Fourth Proportional to 2,814.46, 3,879.83 and 1,972.62

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Solution

The fourth proportional to 2,814.46, 3,879.83 and 1,972.62 is: 2,719.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,814.46 : 3,879.83 = 1,972.62 : x
  2. Step 2: Convert to fraction form
    2,814.46/3,879.83 = 1,972.62/x
  3. Step 3: Cross multiply
    2,814.46x = 3,879.83 × 1,972.62
  4. Step 4: Simplify right side
    2,814.46x = 7,653,435.19
  5. Step 5: Solve for x
    x = 7,653,435.19/2,814.46
  6. Step 6: Final answer
    x = 2,719.33

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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.