Home / 8,138.78-11,229.49-4,736.35

Finding the Fourth Proportional to 8,138.78, 11,229.49 and 4,736.35

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Solution

The fourth proportional to 8,138.78, 11,229.49 and 4,736.35 is: 6,534.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,138.78 : 11,229.49 = 4,736.35 : x
  2. Step 2: Convert to fraction form
    8,138.78/11,229.49 = 4,736.35/x
  3. Step 3: Cross multiply
    8,138.78x = 11,229.49 × 4,736.35
  4. Step 4: Simplify right side
    8,138.78x = 53,186,794.96
  5. Step 5: Solve for x
    x = 53,186,794.96/8,138.78
  6. Step 6: Final answer
    x = 6,534.98

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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.