Home / 8,617.20-12,930.20-3,690.96

Finding the Fourth Proportional to 8,617.20, 12,930.20 and 3,690.96

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Solution

The fourth proportional to 8,617.20, 12,930.20 and 3,690.96 is: 5,538.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,617.20 : 12,930.20 = 3,690.96 : x
  2. Step 2: Convert to fraction form
    8,617.20/12,930.20 = 3,690.96/x
  3. Step 3: Cross multiply
    8,617.20x = 12,930.20 × 3,690.96
  4. Step 4: Simplify right side
    8,617.20x = 47,724,850.99
  5. Step 5: Solve for x
    x = 47,724,850.99/8,617.20
  6. Step 6: Final answer
    x = 5,538.32

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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.