Home / 2,057.10-3,081.60-1,911.30

Finding the Fourth Proportional to 2,057.10, 3,081.60 and 1,911.30

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Solution

The fourth proportional to 2,057.10, 3,081.60 and 1,911.30 is: 2,863.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,057.10 : 3,081.60 = 1,911.30 : x
  2. Step 2: Convert to fraction form
    2,057.10/3,081.60 = 1,911.30/x
  3. Step 3: Cross multiply
    2,057.10x = 3,081.60 × 1,911.30
  4. Step 4: Simplify right side
    2,057.10x = 5,889,862.08
  5. Step 5: Solve for x
    x = 5,889,862.08/2,057.10
  6. Step 6: Final answer
    x = 2,863.19

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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.