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Finding the Fourth Proportional to 8,138.15, 11,230.22 and 4,601.15

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Solution

The fourth proportional to 8,138.15, 11,230.22 and 4,601.15 is: 6,349.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,138.15 : 11,230.22 = 4,601.15 : x
  2. Step 2: Convert to fraction form
    8,138.15/11,230.22 = 4,601.15/x
  3. Step 3: Cross multiply
    8,138.15x = 11,230.22 × 4,601.15
  4. Step 4: Simplify right side
    8,138.15x = 51,671,903.75
  5. Step 5: Solve for x
    x = 51,671,903.75/8,138.15
  6. Step 6: Final answer
    x = 6,349.34

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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.