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Finding the Fourth Proportional to 8,519.80, 12,779.70 and 2,676.40

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Solution

The fourth proportional to 8,519.80, 12,779.70 and 2,676.40 is: 4,014.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,519.80 : 12,779.70 = 2,676.40 : x
  2. Step 2: Convert to fraction form
    8,519.80/12,779.70 = 2,676.40/x
  3. Step 3: Cross multiply
    8,519.80x = 12,779.70 × 2,676.40
  4. Step 4: Simplify right side
    8,519.80x = 34,203,589.08
  5. Step 5: Solve for x
    x = 34,203,589.08/8,519.80
  6. Step 6: Final answer
    x = 4,014.60

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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.