Home / 2,125.05-3,181.66-1,082.80

Finding the Fourth Proportional to 2,125.05, 3,181.66 and 1,082.80

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Solution

The fourth proportional to 2,125.05, 3,181.66 and 1,082.80 is: 1,621.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,125.05 : 3,181.66 = 1,082.80 : x
  2. Step 2: Convert to fraction form
    2,125.05/3,181.66 = 1,082.80/x
  3. Step 3: Cross multiply
    2,125.05x = 3,181.66 × 1,082.80
  4. Step 4: Simplify right side
    2,125.05x = 3,445,102.72
  5. Step 5: Solve for x
    x = 3,445,102.72/2,125.05
  6. Step 6: Final answer
    x = 1,621.19

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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.