Home / 7,480.96-11,216.20-3,318.72

Finding the Fourth Proportional to 7,480.96, 11,216.20 and 3,318.72

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Solution

The fourth proportional to 7,480.96, 11,216.20 and 3,318.72 is: 4,975.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,480.96 : 11,216.20 = 3,318.72 : x
  2. Step 2: Convert to fraction form
    7,480.96/11,216.20 = 3,318.72/x
  3. Step 3: Cross multiply
    7,480.96x = 11,216.20 × 3,318.72
  4. Step 4: Simplify right side
    7,480.96x = 37,223,427.26
  5. Step 5: Solve for x
    x = 37,223,427.26/7,480.96
  6. Step 6: Final answer
    x = 4,975.76

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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.