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Finding the Fourth Proportional to 8,558.76, 12,840.41 and 3,628.56

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Solution

The fourth proportional to 8,558.76, 12,840.41 and 3,628.56 is: 5,443.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,558.76 : 12,840.41 = 3,628.56 : x
  2. Step 2: Convert to fraction form
    8,558.76/12,840.41 = 3,628.56/x
  3. Step 3: Cross multiply
    8,558.76x = 12,840.41 × 3,628.56
  4. Step 4: Simplify right side
    8,558.76x = 46,592,234.92
  5. Step 5: Solve for x
    x = 46,592,234.92/8,558.76
  6. Step 6: Final answer
    x = 5,443.80

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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.