Home / 2,122.03-3,185.61-1,198.30

Finding the Fourth Proportional to 2,122.03, 3,185.61 and 1,198.30

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Solution

The fourth proportional to 2,122.03, 3,185.61 and 1,198.30 is: 1,798.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,122.03 : 3,185.61 = 1,198.30 : x
  2. Step 2: Convert to fraction form
    2,122.03/3,185.61 = 1,198.30/x
  3. Step 3: Cross multiply
    2,122.03x = 3,185.61 × 1,198.30
  4. Step 4: Simplify right side
    2,122.03x = 3,817,316.46
  5. Step 5: Solve for x
    x = 3,817,316.46/2,122.03
  6. Step 6: Final answer
    x = 1,798.90

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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.