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Finding the Fourth Proportional to 7,819.80, 10,791.09 and 4,282.93

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Solution

The fourth proportional to 7,819.80, 10,791.09 and 4,282.93 is: 5,910.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,819.80 : 10,791.09 = 4,282.93 : x
  2. Step 2: Convert to fraction form
    7,819.80/10,791.09 = 4,282.93/x
  3. Step 3: Cross multiply
    7,819.80x = 10,791.09 × 4,282.93
  4. Step 4: Simplify right side
    7,819.80x = 46,217,483.09
  5. Step 5: Solve for x
    x = 46,217,483.09/7,819.80
  6. Step 6: Final answer
    x = 5,910.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.