Home / 8,212.96-12,319.91-5,579.33

Finding the Fourth Proportional to 8,212.96, 12,319.91 and 5,579.33

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Solution

The fourth proportional to 8,212.96, 12,319.91 and 5,579.33 is: 8,369.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,212.96 : 12,319.91 = 5,579.33 : x
  2. Step 2: Convert to fraction form
    8,212.96/12,319.91 = 5,579.33/x
  3. Step 3: Cross multiply
    8,212.96x = 12,319.91 × 5,579.33
  4. Step 4: Simplify right side
    8,212.96x = 68,736,815.56
  5. Step 5: Solve for x
    x = 68,736,815.56/8,212.96
  6. Step 6: Final answer
    x = 8,369.32

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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.