Home / 3,981.75-5,972.62-1,643.07

Finding the Fourth Proportional to 3,981.75, 5,972.62 and 1,643.07

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Solution

The fourth proportional to 3,981.75, 5,972.62 and 1,643.07 is: 2,464.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,981.75 : 5,972.62 = 1,643.07 : x
  2. Step 2: Convert to fraction form
    3,981.75/5,972.62 = 1,643.07/x
  3. Step 3: Cross multiply
    3,981.75x = 5,972.62 × 1,643.07
  4. Step 4: Simplify right side
    3,981.75x = 9,813,432.74
  5. Step 5: Solve for x
    x = 9,813,432.74/3,981.75
  6. Step 6: Final answer
    x = 2,464.60

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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.