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Finding the Fourth Proportional to 6,650.73, 9,985.21 and 4,178.21

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Solution

The fourth proportional to 6,650.73, 9,985.21 and 4,178.21 is: 6,273.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,650.73 : 9,985.21 = 4,178.21 : x
  2. Step 2: Convert to fraction form
    6,650.73/9,985.21 = 4,178.21/x
  3. Step 3: Cross multiply
    6,650.73x = 9,985.21 × 4,178.21
  4. Step 4: Simplify right side
    6,650.73x = 41,720,243.90
  5. Step 5: Solve for x
    x = 41,720,243.90/6,650.73
  6. Step 6: Final answer
    x = 6,273.03

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1.5x scale

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.