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Finding the Fourth Proportional to 2,648.07, 3,971.88 and 799.16

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Solution

The fourth proportional to 2,648.07, 3,971.88 and 799.16 is: 1,198.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,648.07 : 3,971.88 = 799.16 : x
  2. Step 2: Convert to fraction form
    2,648.07/3,971.88 = 799.16/x
  3. Step 3: Cross multiply
    2,648.07x = 3,971.88 × 799.16
  4. Step 4: Simplify right side
    2,648.07x = 3,174,147.76
  5. Step 5: Solve for x
    x = 3,174,147.76/2,648.07
  6. Step 6: Final answer
    x = 1,198.66

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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.