Home / 3,311.58-4,569.84-1,984.80

Finding the Fourth Proportional to 3,311.58, 4,569.84 and 1,984.80

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Solution

The fourth proportional to 3,311.58, 4,569.84 and 1,984.80 is: 2,738.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,311.58 : 4,569.84 = 1,984.80 : x
  2. Step 2: Convert to fraction form
    3,311.58/4,569.84 = 1,984.80/x
  3. Step 3: Cross multiply
    3,311.58x = 4,569.84 × 1,984.80
  4. Step 4: Simplify right side
    3,311.58x = 9,070,218.43
  5. Step 5: Solve for x
    x = 9,070,218.43/3,311.58
  6. Step 6: Final answer
    x = 2,738.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.