Home / 3,409.67-5,112.12-1,327.92

Finding the Fourth Proportional to 3,409.67, 5,112.12 and 1,327.92

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Solution

The fourth proportional to 3,409.67, 5,112.12 and 1,327.92 is: 1,990.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,409.67 : 5,112.12 = 1,327.92 : x
  2. Step 2: Convert to fraction form
    3,409.67/5,112.12 = 1,327.92/x
  3. Step 3: Cross multiply
    3,409.67x = 5,112.12 × 1,327.92
  4. Step 4: Simplify right side
    3,409.67x = 6,788,486.39
  5. Step 5: Solve for x
    x = 6,788,486.39/3,409.67
  6. Step 6: Final answer
    x = 1,990.95

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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.