Home / 8,455.09-12,673.68-3,187.82

Finding the Fourth Proportional to 8,455.09, 12,673.68 and 3,187.82

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Solution

The fourth proportional to 8,455.09, 12,673.68 and 3,187.82 is: 4,778.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,455.09 : 12,673.68 = 3,187.82 : x
  2. Step 2: Convert to fraction form
    8,455.09/12,673.68 = 3,187.82/x
  3. Step 3: Cross multiply
    8,455.09x = 12,673.68 × 3,187.82
  4. Step 4: Simplify right side
    8,455.09x = 40,401,410.58
  5. Step 5: Solve for x
    x = 40,401,410.58/8,455.09
  6. Step 6: Final answer
    x = 4,778.35

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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.