Home / 3,108.48-4,662.75-917.22

Finding the Fourth Proportional to 3,108.48, 4,662.75 and 917.22

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Solution

The fourth proportional to 3,108.48, 4,662.75 and 917.22 is: 1,375.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,108.48 : 4,662.75 = 917.22 : x
  2. Step 2: Convert to fraction form
    3,108.48/4,662.75 = 917.22/x
  3. Step 3: Cross multiply
    3,108.48x = 4,662.75 × 917.22
  4. Step 4: Simplify right side
    3,108.48x = 4,276,767.56
  5. Step 5: Solve for x
    x = 4,276,767.56/3,108.48
  6. Step 6: Final answer
    x = 1,375.84

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1.5x scale

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.