Home / 2,198.34-3,278.12-2,178.59

Finding the Fourth Proportional to 2,198.34, 3,278.12 and 2,178.59

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Solution

The fourth proportional to 2,198.34, 3,278.12 and 2,178.59 is: 3,248.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,198.34 : 3,278.12 = 2,178.59 : x
  2. Step 2: Convert to fraction form
    2,198.34/3,278.12 = 2,178.59/x
  3. Step 3: Cross multiply
    2,198.34x = 3,278.12 × 2,178.59
  4. Step 4: Simplify right side
    2,198.34x = 7,141,652.17
  5. Step 5: Solve for x
    x = 7,141,652.17/2,198.34
  6. Step 6: Final answer
    x = 3,248.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.