Home / 8,609.28-12,915.12-2,767.68

Finding the Fourth Proportional to 8,609.28, 12,915.12 and 2,767.68

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Solution

The fourth proportional to 8,609.28, 12,915.12 and 2,767.68 is: 4,151.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,609.28 : 12,915.12 = 2,767.68 : x
  2. Step 2: Convert to fraction form
    8,609.28/12,915.12 = 2,767.68/x
  3. Step 3: Cross multiply
    8,609.28x = 12,915.12 × 2,767.68
  4. Step 4: Simplify right side
    8,609.28x = 35,744,919.32
  5. Step 5: Solve for x
    x = 35,744,919.32/8,609.28
  6. Step 6: Final answer
    x = 4,151.91

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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.