Home / 3,213.80-4,820.70-2,274.20

Finding the Fourth Proportional to 3,213.80, 4,820.70 and 2,274.20

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Solution

The fourth proportional to 3,213.80, 4,820.70 and 2,274.20 is: 3,411.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,213.80 : 4,820.70 = 2,274.20 : x
  2. Step 2: Convert to fraction form
    3,213.80/4,820.70 = 2,274.20/x
  3. Step 3: Cross multiply
    3,213.80x = 4,820.70 × 2,274.20
  4. Step 4: Simplify right side
    3,213.80x = 10,963,235.94
  5. Step 5: Solve for x
    x = 10,963,235.94/3,213.80
  6. Step 6: Final answer
    x = 3,411.30

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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.