Home / 1,427.31-2,141.10-605.61

Finding the Fourth Proportional to 1,427.31, 2,141.10 and 605.61

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Solution

The fourth proportional to 1,427.31, 2,141.10 and 605.61 is: 908.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,427.31 : 2,141.10 = 605.61 : x
  2. Step 2: Convert to fraction form
    1,427.31/2,141.10 = 605.61/x
  3. Step 3: Cross multiply
    1,427.31x = 2,141.10 × 605.61
  4. Step 4: Simplify right side
    1,427.31x = 1,296,671.57
  5. Step 5: Solve for x
    x = 1,296,671.57/1,427.31
  6. Step 6: Final answer
    x = 908.47

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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.