Home / 3,981.49-5,968.99-1,640.18

Finding the Fourth Proportional to 3,981.49, 5,968.99 and 1,640.18

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Solution

The fourth proportional to 3,981.49, 5,968.99 and 1,640.18 is: 2,458.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,981.49 : 5,968.99 = 1,640.18 : x
  2. Step 2: Convert to fraction form
    3,981.49/5,968.99 = 1,640.18/x
  3. Step 3: Cross multiply
    3,981.49x = 5,968.99 × 1,640.18
  4. Step 4: Simplify right side
    3,981.49x = 9,790,234.99
  5. Step 5: Solve for x
    x = 9,790,234.99/3,981.49
  6. Step 6: Final answer
    x = 2,458.94

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1.5x scale

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.