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Finding the Fourth Proportional to 6,648.10, 9,972.15 and 3,136.96

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Solution

The fourth proportional to 6,648.10, 9,972.15 and 3,136.96 is: 4,705.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,648.10 : 9,972.15 = 3,136.96 : x
  2. Step 2: Convert to fraction form
    6,648.10/9,972.15 = 3,136.96/x
  3. Step 3: Cross multiply
    6,648.10x = 9,972.15 × 3,136.96
  4. Step 4: Simplify right side
    6,648.10x = 31,282,185.80
  5. Step 5: Solve for x
    x = 31,282,185.80/6,648.10
  6. Step 6: Final answer
    x = 4,705.43

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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.