Home / 5,428.62-8,144.16-1,965.87

Finding the Fourth Proportional to 5,428.62, 8,144.16 and 1,965.87

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Solution

The fourth proportional to 5,428.62, 8,144.16 and 1,965.87 is: 2,949.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,428.62 : 8,144.16 = 1,965.87 : x
  2. Step 2: Convert to fraction form
    5,428.62/8,144.16 = 1,965.87/x
  3. Step 3: Cross multiply
    5,428.62x = 8,144.16 × 1,965.87
  4. Step 4: Simplify right side
    5,428.62x = 16,010,359.82
  5. Step 5: Solve for x
    x = 16,010,359.82/5,428.62
  6. Step 6: Final answer
    x = 2,949.25

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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.