Home / 8,212.98-12,318.39-2,290.26

Finding the Fourth Proportional to 8,212.98, 12,318.39 and 2,290.26

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Solution

The fourth proportional to 8,212.98, 12,318.39 and 2,290.26 is: 3,435.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,212.98 : 12,318.39 = 2,290.26 : x
  2. Step 2: Convert to fraction form
    8,212.98/12,318.39 = 2,290.26/x
  3. Step 3: Cross multiply
    8,212.98x = 12,318.39 × 2,290.26
  4. Step 4: Simplify right side
    8,212.98x = 28,212,315.88
  5. Step 5: Solve for x
    x = 28,212,315.88/8,212.98
  6. Step 6: Final answer
    x = 3,435.09

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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.