Home / 1,890.96-2,833.84-1,428.36

Finding the Fourth Proportional to 1,890.96, 2,833.84 and 1,428.36

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Solution

The fourth proportional to 1,890.96, 2,833.84 and 1,428.36 is: 2,140.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,890.96 : 2,833.84 = 1,428.36 : x
  2. Step 2: Convert to fraction form
    1,890.96/2,833.84 = 1,428.36/x
  3. Step 3: Cross multiply
    1,890.96x = 2,833.84 × 1,428.36
  4. Step 4: Simplify right side
    1,890.96x = 4,047,743.70
  5. Step 5: Solve for x
    x = 4,047,743.70/1,890.96
  6. Step 6: Final answer
    x = 2,140.58

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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.