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Finding the Fourth Proportional to 7,805.57, 10,768.41 and 5,117.43

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Solution

The fourth proportional to 7,805.57, 10,768.41 and 5,117.43 is: 7,059.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,805.57 : 10,768.41 = 5,117.43 : x
  2. Step 2: Convert to fraction form
    7,805.57/10,768.41 = 5,117.43/x
  3. Step 3: Cross multiply
    7,805.57x = 10,768.41 × 5,117.43
  4. Step 4: Simplify right side
    7,805.57x = 55,106,584.39
  5. Step 5: Solve for x
    x = 55,106,584.39/7,805.57
  6. Step 6: Final answer
    x = 7,059.91

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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.