Home / 3,185.75-4,779.84-1,238.11

Finding the Fourth Proportional to 3,185.75, 4,779.84 and 1,238.11

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Solution

The fourth proportional to 3,185.75, 4,779.84 and 1,238.11 is: 1,857.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,185.75 : 4,779.84 = 1,238.11 : x
  2. Step 2: Convert to fraction form
    3,185.75/4,779.84 = 1,238.11/x
  3. Step 3: Cross multiply
    3,185.75x = 4,779.84 × 1,238.11
  4. Step 4: Simplify right side
    3,185.75x = 5,917,967.70
  5. Step 5: Solve for x
    x = 5,917,967.70/3,185.75
  6. Step 6: Final answer
    x = 1,857.64

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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.