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Finding the Fourth Proportional to 6,287.90, 8,676.90 and 3,770.21

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Solution

The fourth proportional to 6,287.90, 8,676.90 and 3,770.21 is: 5,202.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,287.90 : 8,676.90 = 3,770.21 : x
  2. Step 2: Convert to fraction form
    6,287.90/8,676.90 = 3,770.21/x
  3. Step 3: Cross multiply
    6,287.90x = 8,676.90 × 3,770.21
  4. Step 4: Simplify right side
    6,287.90x = 32,713,735.15
  5. Step 5: Solve for x
    x = 32,713,735.15/6,287.90
  6. Step 6: Final answer
    x = 5,202.65

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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.