Home / 3,225.24-4,836.81-1,990.80

Finding the Fourth Proportional to 3,225.24, 4,836.81 and 1,990.80

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Solution

The fourth proportional to 3,225.24, 4,836.81 and 1,990.80 is: 2,985.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,225.24 : 4,836.81 = 1,990.80 : x
  2. Step 2: Convert to fraction form
    3,225.24/4,836.81 = 1,990.80/x
  3. Step 3: Cross multiply
    3,225.24x = 4,836.81 × 1,990.80
  4. Step 4: Simplify right side
    3,225.24x = 9,629,121.35
  5. Step 5: Solve for x
    x = 9,629,121.35/3,225.24
  6. Step 6: Final answer
    x = 2,985.55

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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.