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Finding the Fourth Proportional to 6,930.29, 9,563.78 and 3,786.48

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Solution

The fourth proportional to 6,930.29, 9,563.78 and 3,786.48 is: 5,225.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,930.29 : 9,563.78 = 3,786.48 : x
  2. Step 2: Convert to fraction form
    6,930.29/9,563.78 = 3,786.48/x
  3. Step 3: Cross multiply
    6,930.29x = 9,563.78 × 3,786.48
  4. Step 4: Simplify right side
    6,930.29x = 36,213,071.16
  5. Step 5: Solve for x
    x = 36,213,071.16/6,930.29
  6. Step 6: Final answer
    x = 5,225.33

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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.