Home / 3,972.90-5,954.31-1,781.54

Finding the Fourth Proportional to 3,972.90, 5,954.31 and 1,781.54

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Solution

The fourth proportional to 3,972.90, 5,954.31 and 1,781.54 is: 2,670.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,972.90 : 5,954.31 = 1,781.54 : x
  2. Step 2: Convert to fraction form
    3,972.90/5,954.31 = 1,781.54/x
  3. Step 3: Cross multiply
    3,972.90x = 5,954.31 × 1,781.54
  4. Step 4: Simplify right side
    3,972.90x = 10,607,841.44
  5. Step 5: Solve for x
    x = 10,607,841.44/3,972.90
  6. Step 6: Final answer
    x = 2,670.05

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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.