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Finding the Fourth Proportional to 11,952.72, 17,928.94 and 3,188.32

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Solution

The fourth proportional to 11,952.72, 17,928.94 and 3,188.32 is: 4,782.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,952.72 : 17,928.94 = 3,188.32 : x
  2. Step 2: Convert to fraction form
    11,952.72/17,928.94 = 3,188.32/x
  3. Step 3: Cross multiply
    11,952.72x = 17,928.94 × 3,188.32
  4. Step 4: Simplify right side
    11,952.72x = 57,163,197.98
  5. Step 5: Solve for x
    x = 57,163,197.98/11,952.72
  6. Step 6: Final answer
    x = 4,782.44

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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.