Home / 1,441.28-1,989.21-945.26

Finding the Fourth Proportional to 1,441.28, 1,989.21 and 945.26

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Solution

The fourth proportional to 1,441.28, 1,989.21 and 945.26 is: 1,304.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,441.28 : 1,989.21 = 945.26 : x
  2. Step 2: Convert to fraction form
    1,441.28/1,989.21 = 945.26/x
  3. Step 3: Cross multiply
    1,441.28x = 1,989.21 × 945.26
  4. Step 4: Simplify right side
    1,441.28x = 1,880,310.70
  5. Step 5: Solve for x
    x = 1,880,310.70/1,441.28
  6. Step 6: Final answer
    x = 1,304.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.