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Finding the Fourth Proportional to 6,645.21, 9,960.97 and 2,949.18

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Solution

The fourth proportional to 6,645.21, 9,960.97 and 2,949.18 is: 4,420.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,645.21 : 9,960.97 = 2,949.18 : x
  2. Step 2: Convert to fraction form
    6,645.21/9,960.97 = 2,949.18/x
  3. Step 3: Cross multiply
    6,645.21x = 9,960.97 × 2,949.18
  4. Step 4: Simplify right side
    6,645.21x = 29,376,672.29
  5. Step 5: Solve for x
    x = 29,376,672.29/6,645.21
  6. Step 6: Final answer
    x = 4,420.73

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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.