Home / 1,917.30-2,873.70-1,896.78

Finding the Fourth Proportional to 1,917.30, 2,873.70 and 1,896.78

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Solution

The fourth proportional to 1,917.30, 2,873.70 and 1,896.78 is: 2,842.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,917.30 : 2,873.70 = 1,896.78 : x
  2. Step 2: Convert to fraction form
    1,917.30/2,873.70 = 1,896.78/x
  3. Step 3: Cross multiply
    1,917.30x = 2,873.70 × 1,896.78
  4. Step 4: Simplify right side
    1,917.30x = 5,450,776.69
  5. Step 5: Solve for x
    x = 5,450,776.69/1,917.30
  6. Step 6: Final answer
    x = 2,842.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.