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Finding the Fourth Proportional to 2,611.24, 3,917.22 and 880.12

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Solution

The fourth proportional to 2,611.24, 3,917.22 and 880.12 is: 1,320.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,611.24 : 3,917.22 = 880.12 : x
  2. Step 2: Convert to fraction form
    2,611.24/3,917.22 = 880.12/x
  3. Step 3: Cross multiply
    2,611.24x = 3,917.22 × 880.12
  4. Step 4: Simplify right side
    2,611.24x = 3,447,623.67
  5. Step 5: Solve for x
    x = 3,447,623.67/2,611.24
  6. Step 6: Final answer
    x = 1,320.30

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Similar ratio
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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.