Home / 2,850.28-4,274.14-1,311.72

Finding the Fourth Proportional to 2,850.28, 4,274.14 and 1,311.72

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Solution

The fourth proportional to 2,850.28, 4,274.14 and 1,311.72 is: 1,966.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,850.28 : 4,274.14 = 1,311.72 : x
  2. Step 2: Convert to fraction form
    2,850.28/4,274.14 = 1,311.72/x
  3. Step 3: Cross multiply
    2,850.28x = 4,274.14 × 1,311.72
  4. Step 4: Simplify right side
    2,850.28x = 5,606,474.92
  5. Step 5: Solve for x
    x = 5,606,474.92/2,850.28
  6. Step 6: Final answer
    x = 1,966.99

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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.