Home / 1,438.33-1,983.79-1,084.36

Finding the Fourth Proportional to 1,438.33, 1,983.79 and 1,084.36

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Solution

The fourth proportional to 1,438.33, 1,983.79 and 1,084.36 is: 1,495.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,438.33 : 1,983.79 = 1,084.36 : x
  2. Step 2: Convert to fraction form
    1,438.33/1,983.79 = 1,084.36/x
  3. Step 3: Cross multiply
    1,438.33x = 1,983.79 × 1,084.36
  4. Step 4: Simplify right side
    1,438.33x = 2,151,142.52
  5. Step 5: Solve for x
    x = 2,151,142.52/1,438.33
  6. Step 6: Final answer
    x = 1,495.58

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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.