Home / 2,836.20-4,254.30-1,961.40

Finding the Fourth Proportional to 2,836.20, 4,254.30 and 1,961.40

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Solution

The fourth proportional to 2,836.20, 4,254.30 and 1,961.40 is: 2,942.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,836.20 : 4,254.30 = 1,961.40 : x
  2. Step 2: Convert to fraction form
    2,836.20/4,254.30 = 1,961.40/x
  3. Step 3: Cross multiply
    2,836.20x = 4,254.30 × 1,961.40
  4. Step 4: Simplify right side
    2,836.20x = 8,344,384.02
  5. Step 5: Solve for x
    x = 8,344,384.02/2,836.20
  6. Step 6: Final answer
    x = 2,942.10

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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.