Home / 8,071.68-12,103.62-3,390.36

Finding the Fourth Proportional to 8,071.68, 12,103.62 and 3,390.36

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Solution

The fourth proportional to 8,071.68, 12,103.62 and 3,390.36 is: 5,083.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,071.68 : 12,103.62 = 3,390.36 : x
  2. Step 2: Convert to fraction form
    8,071.68/12,103.62 = 3,390.36/x
  3. Step 3: Cross multiply
    8,071.68x = 12,103.62 × 3,390.36
  4. Step 4: Simplify right side
    8,071.68x = 41,035,629.10
  5. Step 5: Solve for x
    x = 41,035,629.10/8,071.68
  6. Step 6: Final answer
    x = 5,083.90

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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.