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Finding the Fourth Proportional to 6,736, 9,296.64 and 6,440.80

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Solution

The fourth proportional to 6,736, 9,296.64 and 6,440.80 is: 8,889.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,736 : 9,296.64 = 6,440.80 : x
  2. Step 2: Convert to fraction form
    6,736/9,296.64 = 6,440.80/x
  3. Step 3: Cross multiply
    6,736x = 9,296.64 × 6,440.80
  4. Step 4: Simplify right side
    6,736x = 59,877,798.91
  5. Step 5: Solve for x
    x = 59,877,798.91/6,736
  6. Step 6: Final answer
    x = 8,889.22

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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.