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Finding the Fourth Proportional to 4,679.26, 6,455.78 and 2,789.56

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Solution

The fourth proportional to 4,679.26, 6,455.78 and 2,789.56 is: 3,848.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,679.26 : 6,455.78 = 2,789.56 : x
  2. Step 2: Convert to fraction form
    4,679.26/6,455.78 = 2,789.56/x
  3. Step 3: Cross multiply
    4,679.26x = 6,455.78 × 2,789.56
  4. Step 4: Simplify right side
    4,679.26x = 18,008,785.66
  5. Step 5: Solve for x
    x = 18,008,785.66/4,679.26
  6. Step 6: Final answer
    x = 3,848.64

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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.