Home / 7,631.76-11,445.92-3,415.44

Finding the Fourth Proportional to 7,631.76, 11,445.92 and 3,415.44

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Solution

The fourth proportional to 7,631.76, 11,445.92 and 3,415.44 is: 5,122.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,631.76 : 11,445.92 = 3,415.44 : x
  2. Step 2: Convert to fraction form
    7,631.76/11,445.92 = 3,415.44/x
  3. Step 3: Cross multiply
    7,631.76x = 11,445.92 × 3,415.44
  4. Step 4: Simplify right side
    7,631.76x = 39,092,853.00
  5. Step 5: Solve for x
    x = 39,092,853.00/7,631.76
  6. Step 6: Final answer
    x = 5,122.39

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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.