Home / 2,198.89-3,298.40-965.66

Finding the Fourth Proportional to 2,198.89, 3,298.40 and 965.66

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Solution

The fourth proportional to 2,198.89, 3,298.40 and 965.66 is: 1,448.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,198.89 : 3,298.40 = 965.66 : x
  2. Step 2: Convert to fraction form
    2,198.89/3,298.40 = 965.66/x
  3. Step 3: Cross multiply
    2,198.89x = 3,298.40 × 965.66
  4. Step 4: Simplify right side
    2,198.89x = 3,185,128.12
  5. Step 5: Solve for x
    x = 3,185,128.12/2,198.89
  6. Step 6: Final answer
    x = 1,448.52

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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.