Home / 1,329.72-1,982.87-1,237.38

Finding the Fourth Proportional to 1,329.72, 1,982.87 and 1,237.38

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Solution

The fourth proportional to 1,329.72, 1,982.87 and 1,237.38 is: 1,845.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,329.72 : 1,982.87 = 1,237.38 : x
  2. Step 2: Convert to fraction form
    1,329.72/1,982.87 = 1,237.38/x
  3. Step 3: Cross multiply
    1,329.72x = 1,982.87 × 1,237.38
  4. Step 4: Simplify right side
    1,329.72x = 2,453,557.49
  5. Step 5: Solve for x
    x = 2,453,557.49/1,329.72
  6. Step 6: Final answer
    x = 1,845.17

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.