Home / 2,150.45-3,225.85-917.87

Finding the Fourth Proportional to 2,150.45, 3,225.85 and 917.87

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Solution

The fourth proportional to 2,150.45, 3,225.85 and 917.87 is: 1,376.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,150.45 : 3,225.85 = 917.87 : x
  2. Step 2: Convert to fraction form
    2,150.45/3,225.85 = 917.87/x
  3. Step 3: Cross multiply
    2,150.45x = 3,225.85 × 917.87
  4. Step 4: Simplify right side
    2,150.45x = 2,960,906.35
  5. Step 5: Solve for x
    x = 2,960,906.35/2,150.45
  6. Step 6: Final answer
    x = 1,376.88

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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.