Home / 4,122.92-6,178.86-2,661.32

Finding the Fourth Proportional to 4,122.92, 6,178.86 and 2,661.32

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Solution

The fourth proportional to 4,122.92, 6,178.86 and 2,661.32 is: 3,988.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,122.92 : 6,178.86 = 2,661.32 : x
  2. Step 2: Convert to fraction form
    4,122.92/6,178.86 = 2,661.32/x
  3. Step 3: Cross multiply
    4,122.92x = 6,178.86 × 2,661.32
  4. Step 4: Simplify right side
    4,122.92x = 16,443,923.70
  5. Step 5: Solve for x
    x = 16,443,923.70/4,122.92
  6. Step 6: Final answer
    x = 3,988.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.