Home / 3,278.74-4,913.79-1,329.88

Finding the Fourth Proportional to 3,278.74, 4,913.79 and 1,329.88

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Solution

The fourth proportional to 3,278.74, 4,913.79 and 1,329.88 is: 1,993.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,278.74 : 4,913.79 = 1,329.88 : x
  2. Step 2: Convert to fraction form
    3,278.74/4,913.79 = 1,329.88/x
  3. Step 3: Cross multiply
    3,278.74x = 4,913.79 × 1,329.88
  4. Step 4: Simplify right side
    3,278.74x = 6,534,751.05
  5. Step 5: Solve for x
    x = 6,534,751.05/3,278.74
  6. Step 6: Final answer
    x = 1,993.07

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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.