Home / 8,423.80-12,635.76-3,742.54

Finding the Fourth Proportional to 8,423.80, 12,635.76 and 3,742.54

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Solution

The fourth proportional to 8,423.80, 12,635.76 and 3,742.54 is: 5,613.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,423.80 : 12,635.76 = 3,742.54 : x
  2. Step 2: Convert to fraction form
    8,423.80/12,635.76 = 3,742.54/x
  3. Step 3: Cross multiply
    8,423.80x = 12,635.76 × 3,742.54
  4. Step 4: Simplify right side
    8,423.80x = 47,289,819.68
  5. Step 5: Solve for x
    x = 47,289,819.68/8,423.80
  6. Step 6: Final answer
    x = 5,613.84

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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.