Home / 9,142.63-12,616.80-5,163.73

Finding the Fourth Proportional to 9,142.63, 12,616.80 and 5,163.73

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Solution

The fourth proportional to 9,142.63, 12,616.80 and 5,163.73 is: 7,125.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,142.63 : 12,616.80 = 5,163.73 : x
  2. Step 2: Convert to fraction form
    9,142.63/12,616.80 = 5,163.73/x
  3. Step 3: Cross multiply
    9,142.63x = 12,616.80 × 5,163.73
  4. Step 4: Simplify right side
    9,142.63x = 65,149,748.66
  5. Step 5: Solve for x
    x = 65,149,748.66/9,142.63
  6. Step 6: Final answer
    x = 7,125.93

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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.