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Finding the Fourth Proportional to 8,309.48, 12,458.64 and 3,308.54

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Solution

The fourth proportional to 8,309.48, 12,458.64 and 3,308.54 is: 4,960.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,309.48 : 12,458.64 = 3,308.54 : x
  2. Step 2: Convert to fraction form
    8,309.48/12,458.64 = 3,308.54/x
  3. Step 3: Cross multiply
    8,309.48x = 12,458.64 × 3,308.54
  4. Step 4: Simplify right side
    8,309.48x = 41,219,908.79
  5. Step 5: Solve for x
    x = 41,219,908.79/8,309.48
  6. Step 6: Final answer
    x = 4,960.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.