Home / 5,412.14-8,119.31-2,080.25

Finding the Fourth Proportional to 5,412.14, 8,119.31 and 2,080.25

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Solution

The fourth proportional to 5,412.14, 8,119.31 and 2,080.25 is: 3,120.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,412.14 : 8,119.31 = 2,080.25 : x
  2. Step 2: Convert to fraction form
    5,412.14/8,119.31 = 2,080.25/x
  3. Step 3: Cross multiply
    5,412.14x = 8,119.31 × 2,080.25
  4. Step 4: Simplify right side
    5,412.14x = 16,890,194.63
  5. Step 5: Solve for x
    x = 16,890,194.63/5,412.14
  6. Step 6: Final answer
    x = 3,120.80

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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.