Home / 8,522.18-12,786.44-3,840.78

Finding the Fourth Proportional to 8,522.18, 12,786.44 and 3,840.78

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Solution

The fourth proportional to 8,522.18, 12,786.44 and 3,840.78 is: 5,762.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,522.18 : 12,786.44 = 3,840.78 : x
  2. Step 2: Convert to fraction form
    8,522.18/12,786.44 = 3,840.78/x
  3. Step 3: Cross multiply
    8,522.18x = 12,786.44 × 3,840.78
  4. Step 4: Simplify right side
    8,522.18x = 49,109,903.02
  5. Step 5: Solve for x
    x = 49,109,903.02/8,522.18
  6. Step 6: Final answer
    x = 5,762.60

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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.