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Finding the Fourth Proportional to 7,892.85, 11,829.22 and 4,196.85

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Solution

The fourth proportional to 7,892.85, 11,829.22 and 4,196.85 is: 6,289.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,892.85 : 11,829.22 = 4,196.85 : x
  2. Step 2: Convert to fraction form
    7,892.85/11,829.22 = 4,196.85/x
  3. Step 3: Cross multiply
    7,892.85x = 11,829.22 × 4,196.85
  4. Step 4: Simplify right side
    7,892.85x = 49,645,461.96
  5. Step 5: Solve for x
    x = 49,645,461.96/7,892.85
  6. Step 6: Final answer
    x = 6,289.93

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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.