Home / 7,143.45-10,715.60-2,760.93

Finding the Fourth Proportional to 7,143.45, 10,715.60 and 2,760.93

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Solution

The fourth proportional to 7,143.45, 10,715.60 and 2,760.93 is: 4,141.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,143.45 : 10,715.60 = 2,760.93 : x
  2. Step 2: Convert to fraction form
    7,143.45/10,715.60 = 2,760.93/x
  3. Step 3: Cross multiply
    7,143.45x = 10,715.60 × 2,760.93
  4. Step 4: Simplify right side
    7,143.45x = 29,585,007.70
  5. Step 5: Solve for x
    x = 29,585,007.70/7,143.45
  6. Step 6: Final answer
    x = 4,141.56

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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.