Home / 3,108.56-4,662.69-917.39

Finding the Fourth Proportional to 3,108.56, 4,662.69 and 917.39

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Solution

The fourth proportional to 3,108.56, 4,662.69 and 917.39 is: 1,376.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,108.56 : 4,662.69 = 917.39 : x
  2. Step 2: Convert to fraction form
    3,108.56/4,662.69 = 917.39/x
  3. Step 3: Cross multiply
    3,108.56x = 4,662.69 × 917.39
  4. Step 4: Simplify right side
    3,108.56x = 4,277,505.18
  5. Step 5: Solve for x
    x = 4,277,505.18/3,108.56
  6. Step 6: Final answer
    x = 1,376.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.