Home / 3,632.70-5,451.44-1,990.40

Finding the Fourth Proportional to 3,632.70, 5,451.44 and 1,990.40

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Solution

The fourth proportional to 3,632.70, 5,451.44 and 1,990.40 is: 2,986.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,632.70 : 5,451.44 = 1,990.40 : x
  2. Step 2: Convert to fraction form
    3,632.70/5,451.44 = 1,990.40/x
  3. Step 3: Cross multiply
    3,632.70x = 5,451.44 × 1,990.40
  4. Step 4: Simplify right side
    3,632.70x = 10,850,532.70
  5. Step 5: Solve for x
    x = 10,850,532.70/3,632.70
  6. Step 6: Final answer
    x = 2,986.91

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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.