Home / 5,323.20-7,986.72-2,399.28

Finding the Fourth Proportional to 5,323.20, 7,986.72 and 2,399.28

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Solution

The fourth proportional to 5,323.20, 7,986.72 and 2,399.28 is: 3,599.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,323.20 : 7,986.72 = 2,399.28 : x
  2. Step 2: Convert to fraction form
    5,323.20/7,986.72 = 2,399.28/x
  3. Step 3: Cross multiply
    5,323.20x = 7,986.72 × 2,399.28
  4. Step 4: Simplify right side
    5,323.20x = 19,162,377.56
  5. Step 5: Solve for x
    x = 19,162,377.56/5,323.20
  6. Step 6: Final answer
    x = 3,599.79

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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.