Home / 3,181.09-4,771.39-1,620.12

Finding the Fourth Proportional to 3,181.09, 4,771.39 and 1,620.12

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Solution

The fourth proportional to 3,181.09, 4,771.39 and 1,620.12 is: 2,430.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,181.09 : 4,771.39 = 1,620.12 : x
  2. Step 2: Convert to fraction form
    3,181.09/4,771.39 = 1,620.12/x
  3. Step 3: Cross multiply
    3,181.09x = 4,771.39 × 1,620.12
  4. Step 4: Simplify right side
    3,181.09x = 7,730,224.37
  5. Step 5: Solve for x
    x = 7,730,224.37/3,181.09
  6. Step 6: Final answer
    x = 2,430.06

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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.