Home / 1,647.11-2,272.92-939.04

Finding the Fourth Proportional to 1,647.11, 2,272.92 and 939.04

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Solution

The fourth proportional to 1,647.11, 2,272.92 and 939.04 is: 1,295.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,647.11 : 2,272.92 = 939.04 : x
  2. Step 2: Convert to fraction form
    1,647.11/2,272.92 = 939.04/x
  3. Step 3: Cross multiply
    1,647.11x = 2,272.92 × 939.04
  4. Step 4: Simplify right side
    1,647.11x = 2,134,362.80
  5. Step 5: Solve for x
    x = 2,134,362.80/1,647.11
  6. Step 6: Final answer
    x = 1,295.82

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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.