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Finding the Fourth Proportional to 6,778.71, 9,358.20 and 4,392.09

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Solution

The fourth proportional to 6,778.71, 9,358.20 and 4,392.09 is: 6,063.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,778.71 : 9,358.20 = 4,392.09 : x
  2. Step 2: Convert to fraction form
    6,778.71/9,358.20 = 4,392.09/x
  3. Step 3: Cross multiply
    6,778.71x = 9,358.20 × 4,392.09
  4. Step 4: Simplify right side
    6,778.71x = 41,102,056.64
  5. Step 5: Solve for x
    x = 41,102,056.64/6,778.71
  6. Step 6: Final answer
    x = 6,063.40

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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.