Home / 1,768.20-2,440.32-982.32

Finding the Fourth Proportional to 1,768.20, 2,440.32 and 982.32

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Solution

The fourth proportional to 1,768.20, 2,440.32 and 982.32 is: 1,355.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,768.20 : 2,440.32 = 982.32 : x
  2. Step 2: Convert to fraction form
    1,768.20/2,440.32 = 982.32/x
  3. Step 3: Cross multiply
    1,768.20x = 2,440.32 × 982.32
  4. Step 4: Simplify right side
    1,768.20x = 2,397,175.14
  5. Step 5: Solve for x
    x = 2,397,175.14/1,768.20
  6. Step 6: Final answer
    x = 1,355.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.