Home / 8,579.28-12,868.84-2,736.40

Finding the Fourth Proportional to 8,579.28, 12,868.84 and 2,736.40

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Solution

The fourth proportional to 8,579.28, 12,868.84 and 2,736.40 is: 4,104.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,579.28 : 12,868.84 = 2,736.40 : x
  2. Step 2: Convert to fraction form
    8,579.28/12,868.84 = 2,736.40/x
  3. Step 3: Cross multiply
    8,579.28x = 12,868.84 × 2,736.40
  4. Step 4: Simplify right side
    8,579.28x = 35,214,293.78
  5. Step 5: Solve for x
    x = 35,214,293.78/8,579.28
  6. Step 6: Final answer
    x = 4,104.57

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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.