Home / 3,109.08-4,662.20-917.04

Finding the Fourth Proportional to 3,109.08, 4,662.20 and 917.04

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Solution

The fourth proportional to 3,109.08, 4,662.20 and 917.04 is: 1,375.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,109.08 : 4,662.20 = 917.04 : x
  2. Step 2: Convert to fraction form
    3,109.08/4,662.20 = 917.04/x
  3. Step 3: Cross multiply
    3,109.08x = 4,662.20 × 917.04
  4. Step 4: Simplify right side
    3,109.08x = 4,275,423.89
  5. Step 5: Solve for x
    x = 4,275,423.89/3,109.08
  6. Step 6: Final answer
    x = 1,375.14

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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.