Home / 7,261.60-10,890.96-3,311.79

Finding the Fourth Proportional to 7,261.60, 10,890.96 and 3,311.79

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Solution

The fourth proportional to 7,261.60, 10,890.96 and 3,311.79 is: 4,967.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,261.60 : 10,890.96 = 3,311.79 : x
  2. Step 2: Convert to fraction form
    7,261.60/10,890.96 = 3,311.79/x
  3. Step 3: Cross multiply
    7,261.60x = 10,890.96 × 3,311.79
  4. Step 4: Simplify right side
    7,261.60x = 36,068,519.16
  5. Step 5: Solve for x
    x = 36,068,519.16/7,261.60
  6. Step 6: Final answer
    x = 4,967.02

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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.