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Finding the Fourth Proportional to 8,813.90, 12,163.94 and 4,835.79

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Solution

The fourth proportional to 8,813.90, 12,163.94 and 4,835.79 is: 6,673.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,813.90 : 12,163.94 = 4,835.79 : x
  2. Step 2: Convert to fraction form
    8,813.90/12,163.94 = 4,835.79/x
  3. Step 3: Cross multiply
    8,813.90x = 12,163.94 × 4,835.79
  4. Step 4: Simplify right side
    8,813.90x = 58,822,235.23
  5. Step 5: Solve for x
    x = 58,822,235.23/8,813.90
  6. Step 6: Final answer
    x = 6,673.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.