Home / 3,570.40-5,357.42-2,091.75

Finding the Fourth Proportional to 3,570.40, 5,357.42 and 2,091.75

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Solution

The fourth proportional to 3,570.40, 5,357.42 and 2,091.75 is: 3,138.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,570.40 : 5,357.42 = 2,091.75 : x
  2. Step 2: Convert to fraction form
    3,570.40/5,357.42 = 2,091.75/x
  3. Step 3: Cross multiply
    3,570.40x = 5,357.42 × 2,091.75
  4. Step 4: Simplify right side
    3,570.40x = 11,206,383.29
  5. Step 5: Solve for x
    x = 11,206,383.29/3,570.40
  6. Step 6: Final answer
    x = 3,138.69

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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.