Home / 8,078.94-12,119.63-2,531.05

Finding the Fourth Proportional to 8,078.94, 12,119.63 and 2,531.05

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Solution

The fourth proportional to 8,078.94, 12,119.63 and 2,531.05 is: 3,796.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,078.94 : 12,119.63 = 2,531.05 : x
  2. Step 2: Convert to fraction form
    8,078.94/12,119.63 = 2,531.05/x
  3. Step 3: Cross multiply
    8,078.94x = 12,119.63 × 2,531.05
  4. Step 4: Simplify right side
    8,078.94x = 30,675,346.56
  5. Step 5: Solve for x
    x = 30,675,346.56/8,078.94
  6. Step 6: Final answer
    x = 3,796.95

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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.