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Finding the Fourth Proportional to 6,455.70, 9,684.45 and 2,757.90

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Solution

The fourth proportional to 6,455.70, 9,684.45 and 2,757.90 is: 4,137.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,455.70 : 9,684.45 = 2,757.90 : x
  2. Step 2: Convert to fraction form
    6,455.70/9,684.45 = 2,757.90/x
  3. Step 3: Cross multiply
    6,455.70x = 9,684.45 × 2,757.90
  4. Step 4: Simplify right side
    6,455.70x = 26,708,744.66
  5. Step 5: Solve for x
    x = 26,708,744.66/6,455.70
  6. Step 6: Final answer
    x = 4,137.23

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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.