Home / 8,210.85-12,318.90-2,942.31

Finding the Fourth Proportional to 8,210.85, 12,318.90 and 2,942.31

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Solution

The fourth proportional to 8,210.85, 12,318.90 and 2,942.31 is: 4,414.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,210.85 : 12,318.90 = 2,942.31 : x
  2. Step 2: Convert to fraction form
    8,210.85/12,318.90 = 2,942.31/x
  3. Step 3: Cross multiply
    8,210.85x = 12,318.90 × 2,942.31
  4. Step 4: Simplify right side
    8,210.85x = 36,246,022.66
  5. Step 5: Solve for x
    x = 36,246,022.66/8,210.85
  6. Step 6: Final answer
    x = 4,414.41

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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.