Home / 8,511.72-12,758.08-3,579.88

Finding the Fourth Proportional to 8,511.72, 12,758.08 and 3,579.88

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Solution

The fourth proportional to 8,511.72, 12,758.08 and 3,579.88 is: 5,365.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,511.72 : 12,758.08 = 3,579.88 : x
  2. Step 2: Convert to fraction form
    8,511.72/12,758.08 = 3,579.88/x
  3. Step 3: Cross multiply
    8,511.72x = 12,758.08 × 3,579.88
  4. Step 4: Simplify right side
    8,511.72x = 45,672,395.43
  5. Step 5: Solve for x
    x = 45,672,395.43/8,511.72
  6. Step 6: Final answer
    x = 5,365.82

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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.