Home / 2,119.47-3,181.14-1,080.19

Finding the Fourth Proportional to 2,119.47, 3,181.14 and 1,080.19

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Solution

The fourth proportional to 2,119.47, 3,181.14 and 1,080.19 is: 1,621.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,119.47 : 3,181.14 = 1,080.19 : x
  2. Step 2: Convert to fraction form
    2,119.47/3,181.14 = 1,080.19/x
  3. Step 3: Cross multiply
    2,119.47x = 3,181.14 × 1,080.19
  4. Step 4: Simplify right side
    2,119.47x = 3,436,235.62
  5. Step 5: Solve for x
    x = 3,436,235.62/2,119.47
  6. Step 6: Final answer
    x = 1,621.27

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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.