Home / 3,163.80-4,336.35-3,142.20

Finding the Fourth Proportional to 3,163.80, 4,336.35 and 3,142.20

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Solution

The fourth proportional to 3,163.80, 4,336.35 and 3,142.20 is: 4,306.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,163.80 : 4,336.35 = 3,142.20 : x
  2. Step 2: Convert to fraction form
    3,163.80/4,336.35 = 3,142.20/x
  3. Step 3: Cross multiply
    3,163.80x = 4,336.35 × 3,142.20
  4. Step 4: Simplify right side
    3,163.80x = 13,625,678.97
  5. Step 5: Solve for x
    x = 13,625,678.97/3,163.80
  6. Step 6: Final answer
    x = 4,306.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.