Home / 5,408.31-8,112.42-2,119.08

Finding the Fourth Proportional to 5,408.31, 8,112.42 and 2,119.08

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Solution

The fourth proportional to 5,408.31, 8,112.42 and 2,119.08 is: 3,178.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,408.31 : 8,112.42 = 2,119.08 : x
  2. Step 2: Convert to fraction form
    5,408.31/8,112.42 = 2,119.08/x
  3. Step 3: Cross multiply
    5,408.31x = 8,112.42 × 2,119.08
  4. Step 4: Simplify right side
    5,408.31x = 17,190,866.97
  5. Step 5: Solve for x
    x = 17,190,866.97/5,408.31
  6. Step 6: Final answer
    x = 3,178.60

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1.5x scale

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.