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Finding the Fourth Proportional to 8,221.74, 12,335.85 and 3,601.50

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Solution

The fourth proportional to 8,221.74, 12,335.85 and 3,601.50 is: 5,403.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,221.74 : 12,335.85 = 3,601.50 : x
  2. Step 2: Convert to fraction form
    8,221.74/12,335.85 = 3,601.50/x
  3. Step 3: Cross multiply
    8,221.74x = 12,335.85 × 3,601.50
  4. Step 4: Simplify right side
    8,221.74x = 44,427,563.78
  5. Step 5: Solve for x
    x = 44,427,563.78/8,221.74
  6. Step 6: Final answer
    x = 5,403.67

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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.