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Finding the Fourth Proportional to 9,879.19, 14,820.80 and 3,305.43

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Solution

The fourth proportional to 9,879.19, 14,820.80 and 3,305.43 is: 4,958.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,879.19 : 14,820.80 = 3,305.43 : x
  2. Step 2: Convert to fraction form
    9,879.19/14,820.80 = 3,305.43/x
  3. Step 3: Cross multiply
    9,879.19x = 14,820.80 × 3,305.43
  4. Step 4: Simplify right side
    9,879.19x = 48,989,116.94
  5. Step 5: Solve for x
    x = 48,989,116.94/9,879.19
  6. Step 6: Final answer
    x = 4,958.82

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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.