Home / 8,228.20-12,339.38-2,680.50

Finding the Fourth Proportional to 8,228.20, 12,339.38 and 2,680.50

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Solution

The fourth proportional to 8,228.20, 12,339.38 and 2,680.50 is: 4,019.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,228.20 : 12,339.38 = 2,680.50 : x
  2. Step 2: Convert to fraction form
    8,228.20/12,339.38 = 2,680.50/x
  3. Step 3: Cross multiply
    8,228.20x = 12,339.38 × 2,680.50
  4. Step 4: Simplify right side
    8,228.20x = 33,075,708.09
  5. Step 5: Solve for x
    x = 33,075,708.09/8,228.20
  6. Step 6: Final answer
    x = 4,019.80

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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.