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Finding the Fourth Proportional to 4,481.64, 6,721.92 and 1,559.70

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Solution

The fourth proportional to 4,481.64, 6,721.92 and 1,559.70 is: 2,339.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,481.64 : 6,721.92 = 1,559.70 : x
  2. Step 2: Convert to fraction form
    4,481.64/6,721.92 = 1,559.70/x
  3. Step 3: Cross multiply
    4,481.64x = 6,721.92 × 1,559.70
  4. Step 4: Simplify right side
    4,481.64x = 10,484,178.62
  5. Step 5: Solve for x
    x = 10,484,178.62/4,481.64
  6. Step 6: Final answer
    x = 2,339.36

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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.