Home / 9,142.13-12,616.70-5,163.62

Finding the Fourth Proportional to 9,142.13, 12,616.70 and 5,163.62

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Solution

The fourth proportional to 9,142.13, 12,616.70 and 5,163.62 is: 7,126.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,142.13 : 12,616.70 = 5,163.62 : x
  2. Step 2: Convert to fraction form
    9,142.13/12,616.70 = 5,163.62/x
  3. Step 3: Cross multiply
    9,142.13x = 12,616.70 × 5,163.62
  4. Step 4: Simplify right side
    9,142.13x = 65,147,755.55
  5. Step 5: Solve for x
    x = 65,147,755.55/9,142.13
  6. Step 6: Final answer
    x = 7,126.10

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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.