Home / 3,108.26-4,663.20-917.08

Finding the Fourth Proportional to 3,108.26, 4,663.20 and 917.08

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Solution

The fourth proportional to 3,108.26, 4,663.20 and 917.08 is: 1,375.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,108.26 : 4,663.20 = 917.08 : x
  2. Step 2: Convert to fraction form
    3,108.26/4,663.20 = 917.08/x
  3. Step 3: Cross multiply
    3,108.26x = 4,663.20 × 917.08
  4. Step 4: Simplify right side
    3,108.26x = 4,276,527.46
  5. Step 5: Solve for x
    x = 4,276,527.46/3,108.26
  6. Step 6: Final answer
    x = 1,375.86

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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.