Home / 8,964.20-13,450.40-3,418.79

Finding the Fourth Proportional to 8,964.20, 13,450.40 and 3,418.79

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Solution

The fourth proportional to 8,964.20, 13,450.40 and 3,418.79 is: 5,129.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,964.20 : 13,450.40 = 3,418.79 : x
  2. Step 2: Convert to fraction form
    8,964.20/13,450.40 = 3,418.79/x
  3. Step 3: Cross multiply
    8,964.20x = 13,450.40 × 3,418.79
  4. Step 4: Simplify right side
    8,964.20x = 45,984,116.38
  5. Step 5: Solve for x
    x = 45,984,116.38/8,964.20
  6. Step 6: Final answer
    x = 5,129.75

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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.