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Finding the Fourth Proportional to 5,789.72, 8,676.79 and 3,153.28

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Solution

The fourth proportional to 5,789.72, 8,676.79 and 3,153.28 is: 4,725.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,789.72 : 8,676.79 = 3,153.28 : x
  2. Step 2: Convert to fraction form
    5,789.72/8,676.79 = 3,153.28/x
  3. Step 3: Cross multiply
    5,789.72x = 8,676.79 × 3,153.28
  4. Step 4: Simplify right side
    5,789.72x = 27,360,348.37
  5. Step 5: Solve for x
    x = 27,360,348.37/5,789.72
  6. Step 6: Final answer
    x = 4,725.68

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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.