Home / 3,021.80-4,532.70-2,100.20

Finding the Fourth Proportional to 3,021.80, 4,532.70 and 2,100.20

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Solution

The fourth proportional to 3,021.80, 4,532.70 and 2,100.20 is: 3,150.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,021.80 : 4,532.70 = 2,100.20 : x
  2. Step 2: Convert to fraction form
    3,021.80/4,532.70 = 2,100.20/x
  3. Step 3: Cross multiply
    3,021.80x = 4,532.70 × 2,100.20
  4. Step 4: Simplify right side
    3,021.80x = 9,519,576.54
  5. Step 5: Solve for x
    x = 9,519,576.54/3,021.80
  6. Step 6: Final answer
    x = 3,150.30

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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.