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Finding the Fourth Proportional to 9,714.63, 14,571.81 and 2,789.13

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Solution

The fourth proportional to 9,714.63, 14,571.81 and 2,789.13 is: 4,183.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,714.63 : 14,571.81 = 2,789.13 : x
  2. Step 2: Convert to fraction form
    9,714.63/14,571.81 = 2,789.13/x
  3. Step 3: Cross multiply
    9,714.63x = 14,571.81 × 2,789.13
  4. Step 4: Simplify right side
    9,714.63x = 40,642,672.43
  5. Step 5: Solve for x
    x = 40,642,672.43/9,714.63
  6. Step 6: Final answer
    x = 4,183.66

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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.