Home / 3,520.80-5,282.10-1,329.55

Finding the Fourth Proportional to 3,520.80, 5,282.10 and 1,329.55

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Solution

The fourth proportional to 3,520.80, 5,282.10 and 1,329.55 is: 1,994.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,520.80 : 5,282.10 = 1,329.55 : x
  2. Step 2: Convert to fraction form
    3,520.80/5,282.10 = 1,329.55/x
  3. Step 3: Cross multiply
    3,520.80x = 5,282.10 × 1,329.55
  4. Step 4: Simplify right side
    3,520.80x = 7,022,802.85
  5. Step 5: Solve for x
    x = 7,022,802.85/3,520.80
  6. Step 6: Final answer
    x = 1,994.66

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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.