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Finding the Fourth Proportional to 6,778.45, 9,354.45 and 4,125.79

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Solution

The fourth proportional to 6,778.45, 9,354.45 and 4,125.79 is: 5,693.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,778.45 : 9,354.45 = 4,125.79 : x
  2. Step 2: Convert to fraction form
    6,778.45/9,354.45 = 4,125.79/x
  3. Step 3: Cross multiply
    6,778.45x = 9,354.45 × 4,125.79
  4. Step 4: Simplify right side
    6,778.45x = 38,594,496.27
  5. Step 5: Solve for x
    x = 38,594,496.27/6,778.45
  6. Step 6: Final answer
    x = 5,693.71

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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.