Home / 2,801.92-4,195.02-2,111.80

Finding the Fourth Proportional to 2,801.92, 4,195.02 and 2,111.80

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Solution

The fourth proportional to 2,801.92, 4,195.02 and 2,111.80 is: 3,161.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,801.92 : 4,195.02 = 2,111.80 : x
  2. Step 2: Convert to fraction form
    2,801.92/4,195.02 = 2,111.80/x
  3. Step 3: Cross multiply
    2,801.92x = 4,195.02 × 2,111.80
  4. Step 4: Simplify right side
    2,801.92x = 8,859,043.24
  5. Step 5: Solve for x
    x = 8,859,043.24/2,801.92
  6. Step 6: Final answer
    x = 3,161.78

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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.