Home / 2,119.77-3,181.41-1,080.54

Finding the Fourth Proportional to 2,119.77, 3,181.41 and 1,080.54

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Solution

The fourth proportional to 2,119.77, 3,181.41 and 1,080.54 is: 1,621.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,119.77 : 3,181.41 = 1,080.54 : x
  2. Step 2: Convert to fraction form
    2,119.77/3,181.41 = 1,080.54/x
  3. Step 3: Cross multiply
    2,119.77x = 3,181.41 × 1,080.54
  4. Step 4: Simplify right side
    2,119.77x = 3,437,640.76
  5. Step 5: Solve for x
    x = 3,437,640.76/2,119.77
  6. Step 6: Final answer
    x = 1,621.70

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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.