Home / 7,177.55-10,766.78-1,912.47

Finding the Fourth Proportional to 7,177.55, 10,766.78 and 1,912.47

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Solution

The fourth proportional to 7,177.55, 10,766.78 and 1,912.47 is: 2,868.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,177.55 : 10,766.78 = 1,912.47 : x
  2. Step 2: Convert to fraction form
    7,177.55/10,766.78 = 1,912.47/x
  3. Step 3: Cross multiply
    7,177.55x = 10,766.78 × 1,912.47
  4. Step 4: Simplify right side
    7,177.55x = 20,591,134.18
  5. Step 5: Solve for x
    x = 20,591,134.18/7,177.55
  6. Step 6: Final answer
    x = 2,868.83

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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.