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Finding the Fourth Proportional to 2,648.42, 3,971.34 and 799.19

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Solution

The fourth proportional to 2,648.42, 3,971.34 and 799.19 is: 1,198.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,648.42 : 3,971.34 = 799.19 : x
  2. Step 2: Convert to fraction form
    2,648.42/3,971.34 = 799.19/x
  3. Step 3: Cross multiply
    2,648.42x = 3,971.34 × 799.19
  4. Step 4: Simplify right side
    2,648.42x = 3,173,831.36
  5. Step 5: Solve for x
    x = 3,173,831.36/2,648.42
  6. Step 6: Final answer
    x = 1,198.39

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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.