Home / 8,613.20-12,910.39-3,685.77

Finding the Fourth Proportional to 8,613.20, 12,910.39 and 3,685.77

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Solution

The fourth proportional to 8,613.20, 12,910.39 and 3,685.77 is: 5,524.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,613.20 : 12,910.39 = 3,685.77 : x
  2. Step 2: Convert to fraction form
    8,613.20/12,910.39 = 3,685.77/x
  3. Step 3: Cross multiply
    8,613.20x = 12,910.39 × 3,685.77
  4. Step 4: Simplify right side
    8,613.20x = 47,584,718.94
  5. Step 5: Solve for x
    x = 47,584,718.94/8,613.20
  6. Step 6: Final answer
    x = 5,524.63

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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.