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Finding the Fourth Proportional to 7,993.91, 11,983.12 and 4,485.60

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Solution

The fourth proportional to 7,993.91, 11,983.12 and 4,485.60 is: 6,724.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,993.91 : 11,983.12 = 4,485.60 : x
  2. Step 2: Convert to fraction form
    7,993.91/11,983.12 = 4,485.60/x
  3. Step 3: Cross multiply
    7,993.91x = 11,983.12 × 4,485.60
  4. Step 4: Simplify right side
    7,993.91x = 53,751,483.07
  5. Step 5: Solve for x
    x = 53,751,483.07/7,993.91
  6. Step 6: Final answer
    x = 6,724.05

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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.