Home / 8,208.72-12,312.05-2,286.05

Finding the Fourth Proportional to 8,208.72, 12,312.05 and 2,286.05

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Solution

The fourth proportional to 8,208.72, 12,312.05 and 2,286.05 is: 3,428.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,208.72 : 12,312.05 = 2,286.05 : x
  2. Step 2: Convert to fraction form
    8,208.72/12,312.05 = 2,286.05/x
  3. Step 3: Cross multiply
    8,208.72x = 12,312.05 × 2,286.05
  4. Step 4: Simplify right side
    8,208.72x = 28,145,961.90
  5. Step 5: Solve for x
    x = 28,145,961.90/8,208.72
  6. Step 6: Final answer
    x = 3,428.79

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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.