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Finding the Fourth Proportional to 2,036.37, 3,053.49 and 939.80

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Solution

The fourth proportional to 2,036.37, 3,053.49 and 939.80 is: 1,409.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,036.37 : 3,053.49 = 939.80 : x
  2. Step 2: Convert to fraction form
    2,036.37/3,053.49 = 939.80/x
  3. Step 3: Cross multiply
    2,036.37x = 3,053.49 × 939.80
  4. Step 4: Simplify right side
    2,036.37x = 2,869,669.90
  5. Step 5: Solve for x
    x = 2,869,669.90/2,036.37
  6. Step 6: Final answer
    x = 1,409.21

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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.