Home / 5,110.80-7,667.96-2,643.12

Finding the Fourth Proportional to 5,110.80, 7,667.96 and 2,643.12

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Solution

The fourth proportional to 5,110.80, 7,667.96 and 2,643.12 is: 3,965.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,110.80 : 7,667.96 = 2,643.12 : x
  2. Step 2: Convert to fraction form
    5,110.80/7,667.96 = 2,643.12/x
  3. Step 3: Cross multiply
    5,110.80x = 7,667.96 × 2,643.12
  4. Step 4: Simplify right side
    5,110.80x = 20,267,338.44
  5. Step 5: Solve for x
    x = 20,267,338.44/5,110.80
  6. Step 6: Final answer
    x = 3,965.59

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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.