Home / 4,209.20-6,311.10-2,021.12

Finding the Fourth Proportional to 4,209.20, 6,311.10 and 2,021.12

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Solution

The fourth proportional to 4,209.20, 6,311.10 and 2,021.12 is: 3,030.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,209.20 : 6,311.10 = 2,021.12 : x
  2. Step 2: Convert to fraction form
    4,209.20/6,311.10 = 2,021.12/x
  3. Step 3: Cross multiply
    4,209.20x = 6,311.10 × 2,021.12
  4. Step 4: Simplify right side
    4,209.20x = 12,755,490.43
  5. Step 5: Solve for x
    x = 12,755,490.43/4,209.20
  6. Step 6: Final answer
    x = 3,030.38

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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.