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Finding the Fourth Proportional to 6,279, 8,663.56 and 3,760.64

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Solution

The fourth proportional to 6,279, 8,663.56 and 3,760.64 is: 5,188.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,279 : 8,663.56 = 3,760.64 : x
  2. Step 2: Convert to fraction form
    6,279/8,663.56 = 3,760.64/x
  3. Step 3: Cross multiply
    6,279x = 8,663.56 × 3,760.64
  4. Step 4: Simplify right side
    6,279x = 32,580,530.28
  5. Step 5: Solve for x
    x = 32,580,530.28/6,279
  6. Step 6: Final answer
    x = 5,188.81

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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.