Home / 7,520.43-10,378.28-4,163.56

Finding the Fourth Proportional to 7,520.43, 10,378.28 and 4,163.56

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Solution

The fourth proportional to 7,520.43, 10,378.28 and 4,163.56 is: 5,745.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,520.43 : 10,378.28 = 4,163.56 : x
  2. Step 2: Convert to fraction form
    7,520.43/10,378.28 = 4,163.56/x
  3. Step 3: Cross multiply
    7,520.43x = 10,378.28 × 4,163.56
  4. Step 4: Simplify right side
    7,520.43x = 43,210,575.94
  5. Step 5: Solve for x
    x = 43,210,575.94/7,520.43
  6. Step 6: Final answer
    x = 5,745.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.