Home / 2,178.90-3,266.12-1,396.64

Finding the Fourth Proportional to 2,178.90, 3,266.12 and 1,396.64

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Solution

The fourth proportional to 2,178.90, 3,266.12 and 1,396.64 is: 2,093.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,178.90 : 3,266.12 = 1,396.64 : x
  2. Step 2: Convert to fraction form
    2,178.90/3,266.12 = 1,396.64/x
  3. Step 3: Cross multiply
    2,178.90x = 3,266.12 × 1,396.64
  4. Step 4: Simplify right side
    2,178.90x = 4,561,605.49
  5. Step 5: Solve for x
    x = 4,561,605.49/2,178.90
  6. Step 6: Final answer
    x = 2,093.54

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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.