Home / 8,120.83-12,181.34-2,856

Finding the Fourth Proportional to 8,120.83, 12,181.34 and 2,856

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Solution

The fourth proportional to 8,120.83, 12,181.34 and 2,856 is: 4,284.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,120.83 : 12,181.34 = 2,856 : x
  2. Step 2: Convert to fraction form
    8,120.83/12,181.34 = 2,856/x
  3. Step 3: Cross multiply
    8,120.83x = 12,181.34 × 2,856
  4. Step 4: Simplify right side
    8,120.83x = 34,789,907.04
  5. Step 5: Solve for x
    x = 34,789,907.04/8,120.83
  6. Step 6: Final answer
    x = 4,284.03

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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.