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Finding the Fourth Proportional to 34,855.20, 52,282.80 and 8,559.60

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Solution

The fourth proportional to 34,855.20, 52,282.80 and 8,559.60 is: 12,839.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,855.20 : 52,282.80 = 8,559.60 : x
  2. Step 2: Convert to fraction form
    34,855.20/52,282.80 = 8,559.60/x
  3. Step 3: Cross multiply
    34,855.20x = 52,282.80 × 8,559.60
  4. Step 4: Simplify right side
    34,855.20x = 447,519,854.88
  5. Step 5: Solve for x
    x = 447,519,854.88/34,855.20
  6. Step 6: Final answer
    x = 12,839.40

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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.