Home / 3,214.20-4,821.30-2,983.80

Finding the Fourth Proportional to 3,214.20, 4,821.30 and 2,983.80

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Solution

The fourth proportional to 3,214.20, 4,821.30 and 2,983.80 is: 4,475.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,214.20 : 4,821.30 = 2,983.80 : x
  2. Step 2: Convert to fraction form
    3,214.20/4,821.30 = 2,983.80/x
  3. Step 3: Cross multiply
    3,214.20x = 4,821.30 × 2,983.80
  4. Step 4: Simplify right side
    3,214.20x = 14,385,794.94
  5. Step 5: Solve for x
    x = 14,385,794.94/3,214.20
  6. Step 6: Final answer
    x = 4,475.70

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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.