Home / 1,890.90-2,833.92-1,273.68

Finding the Fourth Proportional to 1,890.90, 2,833.92 and 1,273.68

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Solution

The fourth proportional to 1,890.90, 2,833.92 and 1,273.68 is: 1,908.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,890.90 : 2,833.92 = 1,273.68 : x
  2. Step 2: Convert to fraction form
    1,890.90/2,833.92 = 1,273.68/x
  3. Step 3: Cross multiply
    1,890.90x = 2,833.92 × 1,273.68
  4. Step 4: Simplify right side
    1,890.90x = 3,609,507.23
  5. Step 5: Solve for x
    x = 3,609,507.23/1,890.90
  6. Step 6: Final answer
    x = 1,908.88

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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.