Home / 2,766.05-4,145.49-1,121.70

Finding the Fourth Proportional to 2,766.05, 4,145.49 and 1,121.70

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Solution

The fourth proportional to 2,766.05, 4,145.49 and 1,121.70 is: 1,681.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,766.05 : 4,145.49 = 1,121.70 : x
  2. Step 2: Convert to fraction form
    2,766.05/4,145.49 = 1,121.70/x
  3. Step 3: Cross multiply
    2,766.05x = 4,145.49 × 1,121.70
  4. Step 4: Simplify right side
    2,766.05x = 4,649,991.04
  5. Step 5: Solve for x
    x = 4,649,991.04/2,766.05
  6. Step 6: Final answer
    x = 1,681.09

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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.