Home / 7,845.45-11,772.15-5,214.75

Finding the Fourth Proportional to 7,845.45, 11,772.15 and 5,214.75

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Solution

The fourth proportional to 7,845.45, 11,772.15 and 5,214.75 is: 7,824.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,845.45 : 11,772.15 = 5,214.75 : x
  2. Step 2: Convert to fraction form
    7,845.45/11,772.15 = 5,214.75/x
  3. Step 3: Cross multiply
    7,845.45x = 11,772.15 × 5,214.75
  4. Step 4: Simplify right side
    7,845.45x = 61,388,819.21
  5. Step 5: Solve for x
    x = 61,388,819.21/7,845.45
  6. Step 6: Final answer
    x = 7,824.77

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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.