Home / 8,220.72-12,329.86-3,025.38

Finding the Fourth Proportional to 8,220.72, 12,329.86 and 3,025.38

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Solution

The fourth proportional to 8,220.72, 12,329.86 and 3,025.38 is: 4,537.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,220.72 : 12,329.86 = 3,025.38 : x
  2. Step 2: Convert to fraction form
    8,220.72/12,329.86 = 3,025.38/x
  3. Step 3: Cross multiply
    8,220.72x = 12,329.86 × 3,025.38
  4. Step 4: Simplify right side
    8,220.72x = 37,302,511.85
  5. Step 5: Solve for x
    x = 37,302,511.85/8,220.72
  6. Step 6: Final answer
    x = 4,537.62

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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.