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Finding the Fourth Proportional to 6,650.85, 9,179.94 and 3,927.77

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Solution

The fourth proportional to 6,650.85, 9,179.94 and 3,927.77 is: 5,421.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,650.85 : 9,179.94 = 3,927.77 : x
  2. Step 2: Convert to fraction form
    6,650.85/9,179.94 = 3,927.77/x
  3. Step 3: Cross multiply
    6,650.85x = 9,179.94 × 3,927.77
  4. Step 4: Simplify right side
    6,650.85x = 36,056,627.40
  5. Step 5: Solve for x
    x = 36,056,627.40/6,650.85
  6. Step 6: Final answer
    x = 5,421.36

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1.5x scale

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.