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Finding the Fourth Proportional to 6,344.80, 8,751.76 and 4,105.76

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Solution

The fourth proportional to 6,344.80, 8,751.76 and 4,105.76 is: 5,663.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,344.80 : 8,751.76 = 4,105.76 : x
  2. Step 2: Convert to fraction form
    6,344.80/8,751.76 = 4,105.76/x
  3. Step 3: Cross multiply
    6,344.80x = 8,751.76 × 4,105.76
  4. Step 4: Simplify right side
    6,344.80x = 35,932,626.14
  5. Step 5: Solve for x
    x = 35,932,626.14/6,344.80
  6. Step 6: Final answer
    x = 5,663.32

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1.5x scale

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.