Home / 8,135.12-12,169.26-6,494.87

Finding the Fourth Proportional to 8,135.12, 12,169.26 and 6,494.87

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Solution

The fourth proportional to 8,135.12, 12,169.26 and 6,494.87 is: 9,715.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,135.12 : 12,169.26 = 6,494.87 : x
  2. Step 2: Convert to fraction form
    8,135.12/12,169.26 = 6,494.87/x
  3. Step 3: Cross multiply
    8,135.12x = 12,169.26 × 6,494.87
  4. Step 4: Simplify right side
    8,135.12x = 79,037,700.85
  5. Step 5: Solve for x
    x = 79,037,700.85/8,135.12
  6. Step 6: Final answer
    x = 9,715.62

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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.