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Finding the Fourth Proportional to 6,770, 9,342.60 and 3,977.12

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Solution

The fourth proportional to 6,770, 9,342.60 and 3,977.12 is: 5,488.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,770 : 9,342.60 = 3,977.12 : x
  2. Step 2: Convert to fraction form
    6,770/9,342.60 = 3,977.12/x
  3. Step 3: Cross multiply
    6,770x = 9,342.60 × 3,977.12
  4. Step 4: Simplify right side
    6,770x = 37,156,641.31
  5. Step 5: Solve for x
    x = 37,156,641.31/6,770
  6. Step 6: Final answer
    x = 5,488.43

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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.