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Finding the Fourth Proportional to 2,626.36, 3,939.64 and 982.73

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Solution

The fourth proportional to 2,626.36, 3,939.64 and 982.73 is: 1,474.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,626.36 : 3,939.64 = 982.73 : x
  2. Step 2: Convert to fraction form
    2,626.36/3,939.64 = 982.73/x
  3. Step 3: Cross multiply
    2,626.36x = 3,939.64 × 982.73
  4. Step 4: Simplify right side
    2,626.36x = 3,871,609.81
  5. Step 5: Solve for x
    x = 3,871,609.81/2,626.36
  6. Step 6: Final answer
    x = 1,474.14

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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.