Home / 5,515.48-7,611.38-2,997.60

Finding the Fourth Proportional to 5,515.48, 7,611.38 and 2,997.60

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Solution

The fourth proportional to 5,515.48, 7,611.38 and 2,997.60 is: 4,136.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,515.48 : 7,611.38 = 2,997.60 : x
  2. Step 2: Convert to fraction form
    5,515.48/7,611.38 = 2,997.60/x
  3. Step 3: Cross multiply
    5,515.48x = 7,611.38 × 2,997.60
  4. Step 4: Simplify right side
    5,515.48x = 22,815,872.69
  5. Step 5: Solve for x
    x = 22,815,872.69/5,515.48
  6. Step 6: Final answer
    x = 4,136.70

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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.