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Finding the Fourth Proportional to 7,813.54, 11,720.36 and 3,196.54

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Solution

The fourth proportional to 7,813.54, 11,720.36 and 3,196.54 is: 4,794.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,813.54 : 11,720.36 = 3,196.54 : x
  2. Step 2: Convert to fraction form
    7,813.54/11,720.36 = 3,196.54/x
  3. Step 3: Cross multiply
    7,813.54x = 11,720.36 × 3,196.54
  4. Step 4: Simplify right side
    7,813.54x = 37,464,599.55
  5. Step 5: Solve for x
    x = 37,464,599.55/7,813.54
  6. Step 6: Final answer
    x = 4,794.83

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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.