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Finding the Fourth Proportional to 8,517.80, 12,770.93 and 4,354.42

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Solution

The fourth proportional to 8,517.80, 12,770.93 and 4,354.42 is: 6,528.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,517.80 : 12,770.93 = 4,354.42 : x
  2. Step 2: Convert to fraction form
    8,517.80/12,770.93 = 4,354.42/x
  3. Step 3: Cross multiply
    8,517.80x = 12,770.93 × 4,354.42
  4. Step 4: Simplify right side
    8,517.80x = 55,609,939.31
  5. Step 5: Solve for x
    x = 55,609,939.31/8,517.80
  6. Step 6: Final answer
    x = 6,528.67

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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.