Home / 9,142.26-12,615.62-5,163.72

Finding the Fourth Proportional to 9,142.26, 12,615.62 and 5,163.72

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Solution

The fourth proportional to 9,142.26, 12,615.62 and 5,163.72 is: 7,125.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,142.26 : 12,615.62 = 5,163.72 : x
  2. Step 2: Convert to fraction form
    9,142.26/12,615.62 = 5,163.72/x
  3. Step 3: Cross multiply
    9,142.26x = 12,615.62 × 5,163.72
  4. Step 4: Simplify right side
    9,142.26x = 65,143,503.49
  5. Step 5: Solve for x
    x = 65,143,503.49/9,142.26
  6. Step 6: Final answer
    x = 7,125.54

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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.