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Finding the Fourth Proportional to 8,607.43, 11,879.49 and 4,779.95

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Solution

The fourth proportional to 8,607.43, 11,879.49 and 4,779.95 is: 6,597.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,607.43 : 11,879.49 = 4,779.95 : x
  2. Step 2: Convert to fraction form
    8,607.43/11,879.49 = 4,779.95/x
  3. Step 3: Cross multiply
    8,607.43x = 11,879.49 × 4,779.95
  4. Step 4: Simplify right side
    8,607.43x = 56,783,415.85
  5. Step 5: Solve for x
    x = 56,783,415.85/8,607.43
  6. Step 6: Final answer
    x = 6,597.03

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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.