Home / 7,425.63-11,138.45-3,318.75

Finding the Fourth Proportional to 7,425.63, 11,138.45 and 3,318.75

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Solution

The fourth proportional to 7,425.63, 11,138.45 and 3,318.75 is: 4,978.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,425.63 : 11,138.45 = 3,318.75 : x
  2. Step 2: Convert to fraction form
    7,425.63/11,138.45 = 3,318.75/x
  3. Step 3: Cross multiply
    7,425.63x = 11,138.45 × 3,318.75
  4. Step 4: Simplify right side
    7,425.63x = 36,965,730.94
  5. Step 5: Solve for x
    x = 36,965,730.94/7,425.63
  6. Step 6: Final answer
    x = 4,978.13

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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.