Home / 3,281.75-4,921.56-1,089.89

Finding the Fourth Proportional to 3,281.75, 4,921.56 and 1,089.89

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Solution

The fourth proportional to 3,281.75, 4,921.56 and 1,089.89 is: 1,634.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,281.75 : 4,921.56 = 1,089.89 : x
  2. Step 2: Convert to fraction form
    3,281.75/4,921.56 = 1,089.89/x
  3. Step 3: Cross multiply
    3,281.75x = 4,921.56 × 1,089.89
  4. Step 4: Simplify right side
    3,281.75x = 5,363,952.88
  5. Step 5: Solve for x
    x = 5,363,952.88/3,281.75
  6. Step 6: Final answer
    x = 1,634.48

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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.