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Finding the Fourth Proportional to 6,147.39, 8,482.80 and 3,789.09

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Solution

The fourth proportional to 6,147.39, 8,482.80 and 3,789.09 is: 5,228.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,147.39 : 8,482.80 = 3,789.09 : x
  2. Step 2: Convert to fraction form
    6,147.39/8,482.80 = 3,789.09/x
  3. Step 3: Cross multiply
    6,147.39x = 8,482.80 × 3,789.09
  4. Step 4: Simplify right side
    6,147.39x = 32,142,092.65
  5. Step 5: Solve for x
    x = 32,142,092.65/6,147.39
  6. Step 6: Final answer
    x = 5,228.58

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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.