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Finding the Fourth Proportional to 8,573.79, 12,865.54 and 3,383.31

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Solution

The fourth proportional to 8,573.79, 12,865.54 and 3,383.31 is: 5,076.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,573.79 : 12,865.54 = 3,383.31 : x
  2. Step 2: Convert to fraction form
    8,573.79/12,865.54 = 3,383.31/x
  3. Step 3: Cross multiply
    8,573.79x = 12,865.54 × 3,383.31
  4. Step 4: Simplify right side
    8,573.79x = 43,528,110.14
  5. Step 5: Solve for x
    x = 43,528,110.14/8,573.79
  6. Step 6: Final answer
    x = 5,076.88

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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.