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Finding the Fourth Proportional to 4,519.48, 6,780.48 and 2,789.32

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Solution

The fourth proportional to 4,519.48, 6,780.48 and 2,789.32 is: 4,184.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,519.48 : 6,780.48 = 2,789.32 : x
  2. Step 2: Convert to fraction form
    4,519.48/6,780.48 = 2,789.32/x
  3. Step 3: Cross multiply
    4,519.48x = 6,780.48 × 2,789.32
  4. Step 4: Simplify right side
    4,519.48x = 18,912,928.47
  5. Step 5: Solve for x
    x = 18,912,928.47/4,519.48
  6. Step 6: Final answer
    x = 4,184.76

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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.