Home / 8,327.96-12,489.20-2,779.66

Finding the Fourth Proportional to 8,327.96, 12,489.20 and 2,779.66

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Solution

The fourth proportional to 8,327.96, 12,489.20 and 2,779.66 is: 4,168.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,327.96 : 12,489.20 = 2,779.66 : x
  2. Step 2: Convert to fraction form
    8,327.96/12,489.20 = 2,779.66/x
  3. Step 3: Cross multiply
    8,327.96x = 12,489.20 × 2,779.66
  4. Step 4: Simplify right side
    8,327.96x = 34,715,729.67
  5. Step 5: Solve for x
    x = 34,715,729.67/8,327.96
  6. Step 6: Final answer
    x = 4,168.58

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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.