Home / 1,768.30-2,439.97-982.34

Finding the Fourth Proportional to 1,768.30, 2,439.97 and 982.34

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Solution

The fourth proportional to 1,768.30, 2,439.97 and 982.34 is: 1,355.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,768.30 : 2,439.97 = 982.34 : x
  2. Step 2: Convert to fraction form
    1,768.30/2,439.97 = 982.34/x
  3. Step 3: Cross multiply
    1,768.30x = 2,439.97 × 982.34
  4. Step 4: Simplify right side
    1,768.30x = 2,396,893.87
  5. Step 5: Solve for x
    x = 2,396,893.87/1,768.30
  6. Step 6: Final answer
    x = 1,355.48

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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.