Home / 8,470.42-12,704.70-2,231.02

Finding the Fourth Proportional to 8,470.42, 12,704.70 and 2,231.02

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Solution

The fourth proportional to 8,470.42, 12,704.70 and 2,231.02 is: 3,346.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,470.42 : 12,704.70 = 2,231.02 : x
  2. Step 2: Convert to fraction form
    8,470.42/12,704.70 = 2,231.02/x
  3. Step 3: Cross multiply
    8,470.42x = 12,704.70 × 2,231.02
  4. Step 4: Simplify right side
    8,470.42x = 28,344,439.79
  5. Step 5: Solve for x
    x = 28,344,439.79/8,470.42
  6. Step 6: Final answer
    x = 3,346.29

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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.