Home / 1,489.14-2,232.69-757.30

Finding the Fourth Proportional to 1,489.14, 2,232.69 and 757.30

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Solution

The fourth proportional to 1,489.14, 2,232.69 and 757.30 is: 1,135.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,489.14 : 2,232.69 = 757.30 : x
  2. Step 2: Convert to fraction form
    1,489.14/2,232.69 = 757.30/x
  3. Step 3: Cross multiply
    1,489.14x = 2,232.69 × 757.30
  4. Step 4: Simplify right side
    1,489.14x = 1,690,816.14
  5. Step 5: Solve for x
    x = 1,690,816.14/1,489.14
  6. Step 6: Final answer
    x = 1,135.43

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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.