Home / 2,890.14-4,335.41-2,119.69

Finding the Fourth Proportional to 2,890.14, 4,335.41 and 2,119.69

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Solution

The fourth proportional to 2,890.14, 4,335.41 and 2,119.69 is: 3,179.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,890.14 : 4,335.41 = 2,119.69 : x
  2. Step 2: Convert to fraction form
    2,890.14/4,335.41 = 2,119.69/x
  3. Step 3: Cross multiply
    2,890.14x = 4,335.41 × 2,119.69
  4. Step 4: Simplify right side
    2,890.14x = 9,189,725.22
  5. Step 5: Solve for x
    x = 9,189,725.22/2,890.14
  6. Step 6: Final answer
    x = 3,179.68

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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.