Home / 3,181.80-4,776.60-2,011.80

Finding the Fourth Proportional to 3,181.80, 4,776.60 and 2,011.80

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Solution

The fourth proportional to 3,181.80, 4,776.60 and 2,011.80 is: 3,020.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,181.80 : 4,776.60 = 2,011.80 : x
  2. Step 2: Convert to fraction form
    3,181.80/4,776.60 = 2,011.80/x
  3. Step 3: Cross multiply
    3,181.80x = 4,776.60 × 2,011.80
  4. Step 4: Simplify right side
    3,181.80x = 9,609,563.88
  5. Step 5: Solve for x
    x = 9,609,563.88/3,181.80
  6. Step 6: Final answer
    x = 3,020.17

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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.