Home / 8,421.87-11,618.60-6,179.85

Finding the Fourth Proportional to 8,421.87, 11,618.60 and 6,179.85

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Solution

The fourth proportional to 8,421.87, 11,618.60 and 6,179.85 is: 8,525.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,421.87 : 11,618.60 = 6,179.85 : x
  2. Step 2: Convert to fraction form
    8,421.87/11,618.60 = 6,179.85/x
  3. Step 3: Cross multiply
    8,421.87x = 11,618.60 × 6,179.85
  4. Step 4: Simplify right side
    8,421.87x = 71,801,174.31
  5. Step 5: Solve for x
    x = 71,801,174.31/8,421.87
  6. Step 6: Final answer
    x = 8,525.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.