Home / 7,135.78-10,704.46-1,941.70

Finding the Fourth Proportional to 7,135.78, 10,704.46 and 1,941.70

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Solution

The fourth proportional to 7,135.78, 10,704.46 and 1,941.70 is: 2,912.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,135.78 : 10,704.46 = 1,941.70 : x
  2. Step 2: Convert to fraction form
    7,135.78/10,704.46 = 1,941.70/x
  3. Step 3: Cross multiply
    7,135.78x = 10,704.46 × 1,941.70
  4. Step 4: Simplify right side
    7,135.78x = 20,784,849.98
  5. Step 5: Solve for x
    x = 20,784,849.98/7,135.78
  6. Step 6: Final answer
    x = 2,912.76

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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.