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Finding the Fourth Proportional to 7,813.92, 11,720.93 and 3,196.92

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Solution

The fourth proportional to 7,813.92, 11,720.93 and 3,196.92 is: 4,795.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,813.92 : 11,720.93 = 3,196.92 : x
  2. Step 2: Convert to fraction form
    7,813.92/11,720.93 = 3,196.92/x
  3. Step 3: Cross multiply
    7,813.92x = 11,720.93 × 3,196.92
  4. Step 4: Simplify right side
    7,813.92x = 37,470,875.54
  5. Step 5: Solve for x
    x = 37,470,875.54/7,813.92
  6. Step 6: Final answer
    x = 4,795.40

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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.