Home / 3,285.84-4,922.88-1,984.80

Finding the Fourth Proportional to 3,285.84, 4,922.88 and 1,984.80

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Solution

The fourth proportional to 3,285.84, 4,922.88 and 1,984.80 is: 2,973.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,285.84 : 4,922.88 = 1,984.80 : x
  2. Step 2: Convert to fraction form
    3,285.84/4,922.88 = 1,984.80/x
  3. Step 3: Cross multiply
    3,285.84x = 4,922.88 × 1,984.80
  4. Step 4: Simplify right side
    3,285.84x = 9,770,932.22
  5. Step 5: Solve for x
    x = 9,770,932.22/3,285.84
  6. Step 6: Final answer
    x = 2,973.65

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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.