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Finding the Fourth Proportional to 6,855.86, 10,287.90 and 2,906.90

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Solution

The fourth proportional to 6,855.86, 10,287.90 and 2,906.90 is: 4,362.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,855.86 : 10,287.90 = 2,906.90 : x
  2. Step 2: Convert to fraction form
    6,855.86/10,287.90 = 2,906.90/x
  3. Step 3: Cross multiply
    6,855.86x = 10,287.90 × 2,906.90
  4. Step 4: Simplify right side
    6,855.86x = 29,905,896.51
  5. Step 5: Solve for x
    x = 29,905,896.51/6,855.86
  6. Step 6: Final answer
    x = 4,362.09

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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.