Home / 4,121.18-5,679.52-2,940.20

Finding the Fourth Proportional to 4,121.18, 5,679.52 and 2,940.20

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Solution

The fourth proportional to 4,121.18, 5,679.52 and 2,940.20 is: 4,051.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,121.18 : 5,679.52 = 2,940.20 : x
  2. Step 2: Convert to fraction form
    4,121.18/5,679.52 = 2,940.20/x
  3. Step 3: Cross multiply
    4,121.18x = 5,679.52 × 2,940.20
  4. Step 4: Simplify right side
    4,121.18x = 16,698,910.25
  5. Step 5: Solve for x
    x = 16,698,910.25/4,121.18
  6. Step 6: Final answer
    x = 4,051.97

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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.