Home / 3,536.09-4,879.78-1,921.04

Finding the Fourth Proportional to 3,536.09, 4,879.78 and 1,921.04

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Solution

The fourth proportional to 3,536.09, 4,879.78 and 1,921.04 is: 2,651.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,536.09 : 4,879.78 = 1,921.04 : x
  2. Step 2: Convert to fraction form
    3,536.09/4,879.78 = 1,921.04/x
  3. Step 3: Cross multiply
    3,536.09x = 4,879.78 × 1,921.04
  4. Step 4: Simplify right side
    3,536.09x = 9,374,232.11
  5. Step 5: Solve for x
    x = 9,374,232.11/3,536.09
  6. Step 6: Final answer
    x = 2,651.01

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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.