Home / 1,488.73-2,231.83-939.70

Finding the Fourth Proportional to 1,488.73, 2,231.83 and 939.70

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Solution

The fourth proportional to 1,488.73, 2,231.83 and 939.70 is: 1,408.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,488.73 : 2,231.83 = 939.70 : x
  2. Step 2: Convert to fraction form
    1,488.73/2,231.83 = 939.70/x
  3. Step 3: Cross multiply
    1,488.73x = 2,231.83 × 939.70
  4. Step 4: Simplify right side
    1,488.73x = 2,097,250.65
  5. Step 5: Solve for x
    x = 2,097,250.65/1,488.73
  6. Step 6: Final answer
    x = 1,408.75

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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.