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Finding the Fourth Proportional to 3,611.06, 4,976.13 and 2,561.30

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Solution

The fourth proportional to 3,611.06, 4,976.13 and 2,561.30 is: 3,529.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,611.06 : 4,976.13 = 2,561.30 : x
  2. Step 2: Convert to fraction form
    3,611.06/4,976.13 = 2,561.30/x
  3. Step 3: Cross multiply
    3,611.06x = 4,976.13 × 2,561.30
  4. Step 4: Simplify right side
    3,611.06x = 12,745,361.77
  5. Step 5: Solve for x
    x = 12,745,361.77/3,611.06
  6. Step 6: Final answer
    x = 3,529.53

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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.