Home / 8,278.38-12,409.26-4,111.98

Finding the Fourth Proportional to 8,278.38, 12,409.26 and 4,111.98

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Solution

The fourth proportional to 8,278.38, 12,409.26 and 4,111.98 is: 6,163.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,278.38 : 12,409.26 = 4,111.98 : x
  2. Step 2: Convert to fraction form
    8,278.38/12,409.26 = 4,111.98/x
  3. Step 3: Cross multiply
    8,278.38x = 12,409.26 × 4,111.98
  4. Step 4: Simplify right side
    8,278.38x = 51,026,628.93
  5. Step 5: Solve for x
    x = 51,026,628.93/8,278.38
  6. Step 6: Final answer
    x = 6,163.84

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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.