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Finding the Fourth Proportional to 6,687.85, 10,025.15 and 3,171.68

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Solution

The fourth proportional to 6,687.85, 10,025.15 and 3,171.68 is: 4,754.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,687.85 : 10,025.15 = 3,171.68 : x
  2. Step 2: Convert to fraction form
    6,687.85/10,025.15 = 3,171.68/x
  3. Step 3: Cross multiply
    6,687.85x = 10,025.15 × 3,171.68
  4. Step 4: Simplify right side
    6,687.85x = 31,796,567.75
  5. Step 5: Solve for x
    x = 31,796,567.75/6,687.85
  6. Step 6: Final answer
    x = 4,754.38

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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.