Home / 5,140.82-7,717.58-3,380.31

Finding the Fourth Proportional to 5,140.82, 7,717.58 and 3,380.31

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Solution

The fourth proportional to 5,140.82, 7,717.58 and 3,380.31 is: 5,074.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,140.82 : 7,717.58 = 3,380.31 : x
  2. Step 2: Convert to fraction form
    5,140.82/7,717.58 = 3,380.31/x
  3. Step 3: Cross multiply
    5,140.82x = 7,717.58 × 3,380.31
  4. Step 4: Simplify right side
    5,140.82x = 26,087,812.85
  5. Step 5: Solve for x
    x = 26,087,812.85/5,140.82
  6. Step 6: Final answer
    x = 5,074.64

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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.