Home / 11,790.40-17,687.35-3,893.75

Finding the Fourth Proportional to 11,790.40, 17,687.35 and 3,893.75

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Solution

The fourth proportional to 11,790.40, 17,687.35 and 3,893.75 is: 5,841.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,790.40 : 17,687.35 = 3,893.75 : x
  2. Step 2: Convert to fraction form
    11,790.40/17,687.35 = 3,893.75/x
  3. Step 3: Cross multiply
    11,790.40x = 17,687.35 × 3,893.75
  4. Step 4: Simplify right side
    11,790.40x = 68,870,119.06
  5. Step 5: Solve for x
    x = 68,870,119.06/11,790.40
  6. Step 6: Final answer
    x = 5,841.20

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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.