Home / 3,120.82-4,677.30-2,729.89

Finding the Fourth Proportional to 3,120.82, 4,677.30 and 2,729.89

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Solution

The fourth proportional to 3,120.82, 4,677.30 and 2,729.89 is: 4,091.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.82 : 4,677.30 = 2,729.89 : x
  2. Step 2: Convert to fraction form
    3,120.82/4,677.30 = 2,729.89/x
  3. Step 3: Cross multiply
    3,120.82x = 4,677.30 × 2,729.89
  4. Step 4: Simplify right side
    3,120.82x = 12,768,514.50
  5. Step 5: Solve for x
    x = 12,768,514.50/3,120.82
  6. Step 6: Final answer
    x = 4,091.40

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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.