Home / 8,611.38-12,915.86-2,767.23

Finding the Fourth Proportional to 8,611.38, 12,915.86 and 2,767.23

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Solution

The fourth proportional to 8,611.38, 12,915.86 and 2,767.23 is: 4,150.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,611.38 : 12,915.86 = 2,767.23 : x
  2. Step 2: Convert to fraction form
    8,611.38/12,915.86 = 2,767.23/x
  3. Step 3: Cross multiply
    8,611.38x = 12,915.86 × 2,767.23
  4. Step 4: Simplify right side
    8,611.38x = 35,741,141.43
  5. Step 5: Solve for x
    x = 35,741,141.43/8,611.38
  6. Step 6: Final answer
    x = 4,150.45

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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.