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Finding the Fourth Proportional to 6,930.64, 9,564.24 and 3,786.80

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Solution

The fourth proportional to 6,930.64, 9,564.24 and 3,786.80 is: 5,225.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,930.64 : 9,564.24 = 3,786.80 : x
  2. Step 2: Convert to fraction form
    6,930.64/9,564.24 = 3,786.80/x
  3. Step 3: Cross multiply
    6,930.64x = 9,564.24 × 3,786.80
  4. Step 4: Simplify right side
    6,930.64x = 36,217,864.03
  5. Step 5: Solve for x
    x = 36,217,864.03/6,930.64
  6. Step 6: Final answer
    x = 5,225.76

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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.