Home / 1,919.09-2,858.59-1,893.58

Finding the Fourth Proportional to 1,919.09, 2,858.59 and 1,893.58

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Solution

The fourth proportional to 1,919.09, 2,858.59 and 1,893.58 is: 2,820.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,919.09 : 2,858.59 = 1,893.58 : x
  2. Step 2: Convert to fraction form
    1,919.09/2,858.59 = 1,893.58/x
  3. Step 3: Cross multiply
    1,919.09x = 2,858.59 × 1,893.58
  4. Step 4: Simplify right side
    1,919.09x = 5,412,964.07
  5. Step 5: Solve for x
    x = 5,412,964.07/1,919.09
  6. Step 6: Final answer
    x = 2,820.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.