Home / 5,515.61-7,611.51-2,997.70

Finding the Fourth Proportional to 5,515.61, 7,611.51 and 2,997.70

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Solution

The fourth proportional to 5,515.61, 7,611.51 and 2,997.70 is: 4,136.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,515.61 : 7,611.51 = 2,997.70 : x
  2. Step 2: Convert to fraction form
    5,515.61/7,611.51 = 2,997.70/x
  3. Step 3: Cross multiply
    5,515.61x = 7,611.51 × 2,997.70
  4. Step 4: Simplify right side
    5,515.61x = 22,817,023.53
  5. Step 5: Solve for x
    x = 22,817,023.53/5,515.61
  6. Step 6: Final answer
    x = 4,136.81

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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.