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Finding the Fourth Proportional to 7,884, 11,826 and 4,421.52

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Solution

The fourth proportional to 7,884, 11,826 and 4,421.52 is: 6,632.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,884 : 11,826 = 4,421.52 : x
  2. Step 2: Convert to fraction form
    7,884/11,826 = 4,421.52/x
  3. Step 3: Cross multiply
    7,884x = 11,826 × 4,421.52
  4. Step 4: Simplify right side
    7,884x = 52,288,895.52
  5. Step 5: Solve for x
    x = 52,288,895.52/7,884
  6. Step 6: Final answer
    x = 6,632.28

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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.