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Finding the Fourth Proportional to 4,329.45, 5,978.48 and 2,739.02

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Solution

The fourth proportional to 4,329.45, 5,978.48 and 2,739.02 is: 3,782.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,329.45 : 5,978.48 = 2,739.02 : x
  2. Step 2: Convert to fraction form
    4,329.45/5,978.48 = 2,739.02/x
  3. Step 3: Cross multiply
    4,329.45x = 5,978.48 × 2,739.02
  4. Step 4: Simplify right side
    4,329.45x = 16,375,132.70
  5. Step 5: Solve for x
    x = 16,375,132.70/4,329.45
  6. Step 6: Final answer
    x = 3,782.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.