Home / 1,489.23-2,053.31-1,223.37

Finding the Fourth Proportional to 1,489.23, 2,053.31 and 1,223.37

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Solution

The fourth proportional to 1,489.23, 2,053.31 and 1,223.37 is: 1,686.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,489.23 : 2,053.31 = 1,223.37 : x
  2. Step 2: Convert to fraction form
    1,489.23/2,053.31 = 1,223.37/x
  3. Step 3: Cross multiply
    1,489.23x = 2,053.31 × 1,223.37
  4. Step 4: Simplify right side
    1,489.23x = 2,511,951.74
  5. Step 5: Solve for x
    x = 2,511,951.74/1,489.23
  6. Step 6: Final answer
    x = 1,686.75

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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.