Home / 2,198.61-3,298.21-738.18

Finding the Fourth Proportional to 2,198.61, 3,298.21 and 738.18

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Solution

The fourth proportional to 2,198.61, 3,298.21 and 738.18 is: 1,107.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,198.61 : 3,298.21 = 738.18 : x
  2. Step 2: Convert to fraction form
    2,198.61/3,298.21 = 738.18/x
  3. Step 3: Cross multiply
    2,198.61x = 3,298.21 × 738.18
  4. Step 4: Simplify right side
    2,198.61x = 2,434,656.17
  5. Step 5: Solve for x
    x = 2,434,656.17/2,198.61
  6. Step 6: Final answer
    x = 1,107.36

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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.