Home / 3,226.50-4,839.78-1,278.71

Finding the Fourth Proportional to 3,226.50, 4,839.78 and 1,278.71

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Solution

The fourth proportional to 3,226.50, 4,839.78 and 1,278.71 is: 1,918.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,226.50 : 4,839.78 = 1,278.71 : x
  2. Step 2: Convert to fraction form
    3,226.50/4,839.78 = 1,278.71/x
  3. Step 3: Cross multiply
    3,226.50x = 4,839.78 × 1,278.71
  4. Step 4: Simplify right side
    3,226.50x = 6,188,675.08
  5. Step 5: Solve for x
    x = 6,188,675.08/3,226.50
  6. Step 6: Final answer
    x = 1,918.08

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1.5x scale

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.