Home / 3,172.20-4,379.97-2,053.80

Finding the Fourth Proportional to 3,172.20, 4,379.97 and 2,053.80

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Solution

The fourth proportional to 3,172.20, 4,379.97 and 2,053.80 is: 2,835.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,172.20 : 4,379.97 = 2,053.80 : x
  2. Step 2: Convert to fraction form
    3,172.20/4,379.97 = 2,053.80/x
  3. Step 3: Cross multiply
    3,172.20x = 4,379.97 × 2,053.80
  4. Step 4: Simplify right side
    3,172.20x = 8,995,582.39
  5. Step 5: Solve for x
    x = 8,995,582.39/3,172.20
  6. Step 6: Final answer
    x = 2,835.76

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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.