Home / 5,178.30-7,768.62-1,891.41

Finding the Fourth Proportional to 5,178.30, 7,768.62 and 1,891.41

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Solution

The fourth proportional to 5,178.30, 7,768.62 and 1,891.41 is: 2,837.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,178.30 : 7,768.62 = 1,891.41 : x
  2. Step 2: Convert to fraction form
    5,178.30/7,768.62 = 1,891.41/x
  3. Step 3: Cross multiply
    5,178.30x = 7,768.62 × 1,891.41
  4. Step 4: Simplify right side
    5,178.30x = 14,693,645.55
  5. Step 5: Solve for x
    x = 14,693,645.55/5,178.30
  6. Step 6: Final answer
    x = 2,837.54

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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.