Home / 2,805.28-4,205.84-1,323.68

Finding the Fourth Proportional to 2,805.28, 4,205.84 and 1,323.68

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Solution

The fourth proportional to 2,805.28, 4,205.84 and 1,323.68 is: 1,984.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,805.28 : 4,205.84 = 1,323.68 : x
  2. Step 2: Convert to fraction form
    2,805.28/4,205.84 = 1,323.68/x
  3. Step 3: Cross multiply
    2,805.28x = 4,205.84 × 1,323.68
  4. Step 4: Simplify right side
    2,805.28x = 5,567,186.29
  5. Step 5: Solve for x
    x = 5,567,186.29/2,805.28
  6. Step 6: Final answer
    x = 1,984.54

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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.