Home / 8,127.85-11,211.56-4,939.54

Finding the Fourth Proportional to 8,127.85, 11,211.56 and 4,939.54

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Solution

The fourth proportional to 8,127.85, 11,211.56 and 4,939.54 is: 6,813.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,127.85 : 11,211.56 = 4,939.54 : x
  2. Step 2: Convert to fraction form
    8,127.85/11,211.56 = 4,939.54/x
  3. Step 3: Cross multiply
    8,127.85x = 11,211.56 × 4,939.54
  4. Step 4: Simplify right side
    8,127.85x = 55,379,949.08
  5. Step 5: Solve for x
    x = 55,379,949.08/8,127.85
  6. Step 6: Final answer
    x = 6,813.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.