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Finding the Fourth Proportional to 3,847.03, 5,308.91 and 2,078.64

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Solution

The fourth proportional to 3,847.03, 5,308.91 and 2,078.64 is: 2,868.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,847.03 : 5,308.91 = 2,078.64 : x
  2. Step 2: Convert to fraction form
    3,847.03/5,308.91 = 2,078.64/x
  3. Step 3: Cross multiply
    3,847.03x = 5,308.91 × 2,078.64
  4. Step 4: Simplify right side
    3,847.03x = 11,035,286.14
  5. Step 5: Solve for x
    x = 11,035,286.14/3,847.03
  6. Step 6: Final answer
    x = 2,868.52

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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.