Home / 3,781.90-5,673.46-1,317.42

Finding the Fourth Proportional to 3,781.90, 5,673.46 and 1,317.42

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Solution

The fourth proportional to 3,781.90, 5,673.46 and 1,317.42 is: 1,976.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,781.90 : 5,673.46 = 1,317.42 : x
  2. Step 2: Convert to fraction form
    3,781.90/5,673.46 = 1,317.42/x
  3. Step 3: Cross multiply
    3,781.90x = 5,673.46 × 1,317.42
  4. Step 4: Simplify right side
    3,781.90x = 7,474,323.09
  5. Step 5: Solve for x
    x = 7,474,323.09/3,781.90
  6. Step 6: Final answer
    x = 1,976.34

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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.