Home / 8,305.72-12,455.38-3,239.29

Finding the Fourth Proportional to 8,305.72, 12,455.38 and 3,239.29

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Solution

The fourth proportional to 8,305.72, 12,455.38 and 3,239.29 is: 4,857.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,305.72 : 12,455.38 = 3,239.29 : x
  2. Step 2: Convert to fraction form
    8,305.72/12,455.38 = 3,239.29/x
  3. Step 3: Cross multiply
    8,305.72x = 12,455.38 × 3,239.29
  4. Step 4: Simplify right side
    8,305.72x = 40,346,537.44
  5. Step 5: Solve for x
    x = 40,346,537.44/8,305.72
  6. Step 6: Final answer
    x = 4,857.68

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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.