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Finding the Fourth Proportional to 6,640.30, 9,958.15 and 2,945.12

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Solution

The fourth proportional to 6,640.30, 9,958.15 and 2,945.12 is: 4,416.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,640.30 : 9,958.15 = 2,945.12 : x
  2. Step 2: Convert to fraction form
    6,640.30/9,958.15 = 2,945.12/x
  3. Step 3: Cross multiply
    6,640.30x = 9,958.15 × 2,945.12
  4. Step 4: Simplify right side
    6,640.30x = 29,327,946.73
  5. Step 5: Solve for x
    x = 29,327,946.73/6,640.30
  6. Step 6: Final answer
    x = 4,416.66

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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.