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Finding the Fourth Proportional to 1,394.38, 1,923.33 and 896.23

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Solution

The fourth proportional to 1,394.38, 1,923.33 and 896.23 is: 1,236.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,394.38 : 1,923.33 = 896.23 : x
  2. Step 2: Convert to fraction form
    1,394.38/1,923.33 = 896.23/x
  3. Step 3: Cross multiply
    1,394.38x = 1,923.33 × 896.23
  4. Step 4: Simplify right side
    1,394.38x = 1,723,746.05
  5. Step 5: Solve for x
    x = 1,723,746.05/1,394.38
  6. Step 6: Final answer
    x = 1,236.21

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Half scale
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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.