Home / 5,515.62-7,611.64-2,997.78

Finding the Fourth Proportional to 5,515.62, 7,611.64 and 2,997.78

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Solution

The fourth proportional to 5,515.62, 7,611.64 and 2,997.78 is: 4,136.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,515.62 : 7,611.64 = 2,997.78 : x
  2. Step 2: Convert to fraction form
    5,515.62/7,611.64 = 2,997.78/x
  3. Step 3: Cross multiply
    5,515.62x = 7,611.64 × 2,997.78
  4. Step 4: Simplify right side
    5,515.62x = 22,818,022.16
  5. Step 5: Solve for x
    x = 22,818,022.16/5,515.62
  6. Step 6: Final answer
    x = 4,136.98

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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.