Home / 5,169.80-7,749.42-3,315.56

Finding the Fourth Proportional to 5,169.80, 7,749.42 and 3,315.56

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Solution

The fourth proportional to 5,169.80, 7,749.42 and 3,315.56 is: 4,969.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,169.80 : 7,749.42 = 3,315.56 : x
  2. Step 2: Convert to fraction form
    5,169.80/7,749.42 = 3,315.56/x
  3. Step 3: Cross multiply
    5,169.80x = 7,749.42 × 3,315.56
  4. Step 4: Simplify right side
    5,169.80x = 25,693,666.98
  5. Step 5: Solve for x
    x = 25,693,666.98/5,169.80
  6. Step 6: Final answer
    x = 4,969.95

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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.