Home / 8,278.92-12,415.41-3,280.14

Finding the Fourth Proportional to 8,278.92, 12,415.41 and 3,280.14

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Solution

The fourth proportional to 8,278.92, 12,415.41 and 3,280.14 is: 4,919.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,278.92 : 12,415.41 = 3,280.14 : x
  2. Step 2: Convert to fraction form
    8,278.92/12,415.41 = 3,280.14/x
  3. Step 3: Cross multiply
    8,278.92x = 12,415.41 × 3,280.14
  4. Step 4: Simplify right side
    8,278.92x = 40,724,282.96
  5. Step 5: Solve for x
    x = 40,724,282.96/8,278.92
  6. Step 6: Final answer
    x = 4,919.03

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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.