Home / 2,840.10-3,919.17-1,581.09

Finding the Fourth Proportional to 2,840.10, 3,919.17 and 1,581.09

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Solution

The fourth proportional to 2,840.10, 3,919.17 and 1,581.09 is: 2,181.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,840.10 : 3,919.17 = 1,581.09 : x
  2. Step 2: Convert to fraction form
    2,840.10/3,919.17 = 1,581.09/x
  3. Step 3: Cross multiply
    2,840.10x = 3,919.17 × 1,581.09
  4. Step 4: Simplify right side
    2,840.10x = 6,196,582.57
  5. Step 5: Solve for x
    x = 6,196,582.57/2,840.10
  6. Step 6: Final answer
    x = 2,181.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.