Home / 1,426.75-2,139.58-605.41

Finding the Fourth Proportional to 1,426.75, 2,139.58 and 605.41

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Solution

The fourth proportional to 1,426.75, 2,139.58 and 605.41 is: 907.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,426.75 : 2,139.58 = 605.41 : x
  2. Step 2: Convert to fraction form
    1,426.75/2,139.58 = 605.41/x
  3. Step 3: Cross multiply
    1,426.75x = 2,139.58 × 605.41
  4. Step 4: Simplify right side
    1,426.75x = 1,295,318.54
  5. Step 5: Solve for x
    x = 1,295,318.54/1,426.75
  6. Step 6: Final answer
    x = 907.88

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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.