Home / 8,327.21-12,491.69-2,778.62

Finding the Fourth Proportional to 8,327.21, 12,491.69 and 2,778.62

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Solution

The fourth proportional to 8,327.21, 12,491.69 and 2,778.62 is: 4,168.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,327.21 : 12,491.69 = 2,778.62 : x
  2. Step 2: Convert to fraction form
    8,327.21/12,491.69 = 2,778.62/x
  3. Step 3: Cross multiply
    8,327.21x = 12,491.69 × 2,778.62
  4. Step 4: Simplify right side
    8,327.21x = 34,709,583.32
  5. Step 5: Solve for x
    x = 34,709,583.32/8,327.21
  6. Step 6: Final answer
    x = 4,168.22

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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.