Home / 3,278.69-4,918.94-1,429.97

Finding the Fourth Proportional to 3,278.69, 4,918.94 and 1,429.97

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Solution

The fourth proportional to 3,278.69, 4,918.94 and 1,429.97 is: 2,145.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,278.69 : 4,918.94 = 1,429.97 : x
  2. Step 2: Convert to fraction form
    3,278.69/4,918.94 = 1,429.97/x
  3. Step 3: Cross multiply
    3,278.69x = 4,918.94 × 1,429.97
  4. Step 4: Simplify right side
    3,278.69x = 7,033,915.61
  5. Step 5: Solve for x
    x = 7,033,915.61/3,278.69
  6. Step 6: Final answer
    x = 2,145.35

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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.