Home / 2,120.36-3,181.62-1,659.08

Finding the Fourth Proportional to 2,120.36, 3,181.62 and 1,659.08

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Solution

The fourth proportional to 2,120.36, 3,181.62 and 1,659.08 is: 2,489.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,120.36 : 3,181.62 = 1,659.08 : x
  2. Step 2: Convert to fraction form
    2,120.36/3,181.62 = 1,659.08/x
  3. Step 3: Cross multiply
    2,120.36x = 3,181.62 × 1,659.08
  4. Step 4: Simplify right side
    2,120.36x = 5,278,562.11
  5. Step 5: Solve for x
    x = 5,278,562.11/2,120.36
  6. Step 6: Final answer
    x = 2,489.47

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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.