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Finding the Fourth Proportional to 6,311.52, 9,468.30 and 1,928.64

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Solution

The fourth proportional to 6,311.52, 9,468.30 and 1,928.64 is: 2,893.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,311.52 : 9,468.30 = 1,928.64 : x
  2. Step 2: Convert to fraction form
    6,311.52/9,468.30 = 1,928.64/x
  3. Step 3: Cross multiply
    6,311.52x = 9,468.30 × 1,928.64
  4. Step 4: Simplify right side
    6,311.52x = 18,260,942.11
  5. Step 5: Solve for x
    x = 18,260,942.11/6,311.52
  6. Step 6: Final answer
    x = 2,893.27

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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.