Home / 7,122.68-10,685.37-2,960.43

Finding the Fourth Proportional to 7,122.68, 10,685.37 and 2,960.43

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Solution

The fourth proportional to 7,122.68, 10,685.37 and 2,960.43 is: 4,441.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,122.68 : 10,685.37 = 2,960.43 : x
  2. Step 2: Convert to fraction form
    7,122.68/10,685.37 = 2,960.43/x
  3. Step 3: Cross multiply
    7,122.68x = 10,685.37 × 2,960.43
  4. Step 4: Simplify right side
    7,122.68x = 31,633,289.91
  5. Step 5: Solve for x
    x = 31,633,289.91/7,122.68
  6. Step 6: Final answer
    x = 4,441.21

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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.