Home / 1,647.25-2,273.04-939.13

Finding the Fourth Proportional to 1,647.25, 2,273.04 and 939.13

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Solution

The fourth proportional to 1,647.25, 2,273.04 and 939.13 is: 1,295.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,647.25 : 2,273.04 = 939.13 : x
  2. Step 2: Convert to fraction form
    1,647.25/2,273.04 = 939.13/x
  3. Step 3: Cross multiply
    1,647.25x = 2,273.04 × 939.13
  4. Step 4: Simplify right side
    1,647.25x = 2,134,674.37
  5. Step 5: Solve for x
    x = 2,134,674.37/1,647.25
  6. Step 6: Final answer
    x = 1,295.90

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1.5x scale

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.