Home / 1,441.26-2,160.43-921.85

Finding the Fourth Proportional to 1,441.26, 2,160.43 and 921.85

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Solution

The fourth proportional to 1,441.26, 2,160.43 and 921.85 is: 1,381.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,441.26 : 2,160.43 = 921.85 : x
  2. Step 2: Convert to fraction form
    1,441.26/2,160.43 = 921.85/x
  3. Step 3: Cross multiply
    1,441.26x = 2,160.43 × 921.85
  4. Step 4: Simplify right side
    1,441.26x = 1,991,584.69
  5. Step 5: Solve for x
    x = 1,991,584.69/1,441.26
  6. Step 6: Final answer
    x = 1,381.84

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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.