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Finding the Fourth Proportional to 8,125.88, 12,205.22 and 4,845.40

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Solution

The fourth proportional to 8,125.88, 12,205.22 and 4,845.40 is: 7,277.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,125.88 : 12,205.22 = 4,845.40 : x
  2. Step 2: Convert to fraction form
    8,125.88/12,205.22 = 4,845.40/x
  3. Step 3: Cross multiply
    8,125.88x = 12,205.22 × 4,845.40
  4. Step 4: Simplify right side
    8,125.88x = 59,139,172.99
  5. Step 5: Solve for x
    x = 59,139,172.99/8,125.88
  6. Step 6: Final answer
    x = 7,277.88

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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.