Home / 9,142.36-12,616.95-5,163.64

Finding the Fourth Proportional to 9,142.36, 12,616.95 and 5,163.64

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Solution

The fourth proportional to 9,142.36, 12,616.95 and 5,163.64 is: 7,126.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,142.36 : 12,616.95 = 5,163.64 : x
  2. Step 2: Convert to fraction form
    9,142.36/12,616.95 = 5,163.64/x
  3. Step 3: Cross multiply
    9,142.36x = 12,616.95 × 5,163.64
  4. Step 4: Simplify right side
    9,142.36x = 65,149,387.70
  5. Step 5: Solve for x
    x = 65,149,387.70/9,142.36
  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.