Home / 8,327.67-12,485.84-3,129.09

Finding the Fourth Proportional to 8,327.67, 12,485.84 and 3,129.09

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Solution

The fourth proportional to 8,327.67, 12,485.84 and 3,129.09 is: 4,691.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,327.67 : 12,485.84 = 3,129.09 : x
  2. Step 2: Convert to fraction form
    8,327.67/12,485.84 = 3,129.09/x
  3. Step 3: Cross multiply
    8,327.67x = 12,485.84 × 3,129.09
  4. Step 4: Simplify right side
    8,327.67x = 39,069,301.44
  5. Step 5: Solve for x
    x = 39,069,301.44/8,327.67
  6. Step 6: Final answer
    x = 4,691.50

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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.