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Finding the Fourth Proportional to 6,311.68, 9,467.17 and 1,928.79

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Solution

The fourth proportional to 6,311.68, 9,467.17 and 1,928.79 is: 2,893.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,311.68 : 9,467.17 = 1,928.79 : x
  2. Step 2: Convert to fraction form
    6,311.68/9,467.17 = 1,928.79/x
  3. Step 3: Cross multiply
    6,311.68x = 9,467.17 × 1,928.79
  4. Step 4: Simplify right side
    6,311.68x = 18,260,178.00
  5. Step 5: Solve for x
    x = 18,260,178.00/6,311.68
  6. Step 6: Final answer
    x = 2,893.08

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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.