Home / 3,919.74-5,875.82-1,321.26

Finding the Fourth Proportional to 3,919.74, 5,875.82 and 1,321.26

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Solution

The fourth proportional to 3,919.74, 5,875.82 and 1,321.26 is: 1,980.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,919.74 : 5,875.82 = 1,321.26 : x
  2. Step 2: Convert to fraction form
    3,919.74/5,875.82 = 1,321.26/x
  3. Step 3: Cross multiply
    3,919.74x = 5,875.82 × 1,321.26
  4. Step 4: Simplify right side
    3,919.74x = 7,763,485.93
  5. Step 5: Solve for x
    x = 7,763,485.93/3,919.74
  6. Step 6: Final answer
    x = 1,980.61

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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.