Home / 3,300.20-4,950.84-1,220.21

Finding the Fourth Proportional to 3,300.20, 4,950.84 and 1,220.21

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Solution

The fourth proportional to 3,300.20, 4,950.84 and 1,220.21 is: 1,830.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,300.20 : 4,950.84 = 1,220.21 : x
  2. Step 2: Convert to fraction form
    3,300.20/4,950.84 = 1,220.21/x
  3. Step 3: Cross multiply
    3,300.20x = 4,950.84 × 1,220.21
  4. Step 4: Simplify right side
    3,300.20x = 6,041,039.72
  5. Step 5: Solve for x
    x = 6,041,039.72/3,300.20
  6. Step 6: Final answer
    x = 1,830.51

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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.