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Finding the Fourth Proportional to 7,813.67, 11,720.55 and 3,196.67

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Solution

The fourth proportional to 7,813.67, 11,720.55 and 3,196.67 is: 4,795.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,813.67 : 11,720.55 = 3,196.67 : x
  2. Step 2: Convert to fraction form
    7,813.67/11,720.55 = 3,196.67/x
  3. Step 3: Cross multiply
    7,813.67x = 11,720.55 × 3,196.67
  4. Step 4: Simplify right side
    7,813.67x = 37,466,671.97
  5. Step 5: Solve for x
    x = 37,466,671.97/7,813.67
  6. Step 6: Final answer
    x = 4,795.02

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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.