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Finding the Fourth Proportional to 8,220.30, 12,330.45 and 3,603.30

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Solution

The fourth proportional to 8,220.30, 12,330.45 and 3,603.30 is: 5,404.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,220.30 : 12,330.45 = 3,603.30 : x
  2. Step 2: Convert to fraction form
    8,220.30/12,330.45 = 3,603.30/x
  3. Step 3: Cross multiply
    8,220.30x = 12,330.45 × 3,603.30
  4. Step 4: Simplify right side
    8,220.30x = 44,430,310.49
  5. Step 5: Solve for x
    x = 44,430,310.49/8,220.30
  6. Step 6: Final answer
    x = 5,404.95

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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.