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Finding the Fourth Proportional to 8,369.20, 12,559.20 and 4,474.72

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Solution

The fourth proportional to 8,369.20, 12,559.20 and 4,474.72 is: 6,714.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,369.20 : 12,559.20 = 4,474.72 : x
  2. Step 2: Convert to fraction form
    8,369.20/12,559.20 = 4,474.72/x
  3. Step 3: Cross multiply
    8,369.20x = 12,559.20 × 4,474.72
  4. Step 4: Simplify right side
    8,369.20x = 56,198,903.42
  5. Step 5: Solve for x
    x = 56,198,903.42/8,369.20
  6. Step 6: Final answer
    x = 6,714.97

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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.