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Finding the Fourth Proportional to 1,768.56, 2,440.62 and 982.62

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Solution

The fourth proportional to 1,768.56, 2,440.62 and 982.62 is: 1,356.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,768.56 : 2,440.62 = 982.62 : x
  2. Step 2: Convert to fraction form
    1,768.56/2,440.62 = 982.62/x
  3. Step 3: Cross multiply
    1,768.56x = 2,440.62 × 982.62
  4. Step 4: Simplify right side
    1,768.56x = 2,398,202.02
  5. Step 5: Solve for x
    x = 2,398,202.02/1,768.56
  6. Step 6: Final answer
    x = 1,356.02

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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.