Home / 8,071.25-12,112.34-4,178.39

Finding the Fourth Proportional to 8,071.25, 12,112.34 and 4,178.39

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Solution

The fourth proportional to 8,071.25, 12,112.34 and 4,178.39 is: 6,270.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,071.25 : 12,112.34 = 4,178.39 : x
  2. Step 2: Convert to fraction form
    8,071.25/12,112.34 = 4,178.39/x
  3. Step 3: Cross multiply
    8,071.25x = 12,112.34 × 4,178.39
  4. Step 4: Simplify right side
    8,071.25x = 50,609,998.88
  5. Step 5: Solve for x
    x = 50,609,998.88/8,071.25
  6. Step 6: Final answer
    x = 6,270.41

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1.5x scale

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.