Home / 2,840.16-3,919.39-1,581.22

Finding the Fourth Proportional to 2,840.16, 3,919.39 and 1,581.22

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Solution

The fourth proportional to 2,840.16, 3,919.39 and 1,581.22 is: 2,182.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,840.16 : 3,919.39 = 1,581.22 : x
  2. Step 2: Convert to fraction form
    2,840.16/3,919.39 = 1,581.22/x
  3. Step 3: Cross multiply
    2,840.16x = 3,919.39 × 1,581.22
  4. Step 4: Simplify right side
    2,840.16x = 6,197,404.10
  5. Step 5: Solve for x
    x = 6,197,404.10/2,840.16
  6. Step 6: Final answer
    x = 2,182.06

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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.