Home / 3,280.05-4,920.07-1,028.75

Finding the Fourth Proportional to 3,280.05, 4,920.07 and 1,028.75

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Solution

The fourth proportional to 3,280.05, 4,920.07 and 1,028.75 is: 1,543.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,280.05 : 4,920.07 = 1,028.75 : x
  2. Step 2: Convert to fraction form
    3,280.05/4,920.07 = 1,028.75/x
  3. Step 3: Cross multiply
    3,280.05x = 4,920.07 × 1,028.75
  4. Step 4: Simplify right side
    3,280.05x = 5,061,516.87
  5. Step 5: Solve for x
    x = 5,061,516.87/3,280.05
  6. Step 6: Final answer
    x = 1,543.12

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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.