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Finding the Fourth Proportional to 1,383.29, 1,908.83 and 793.70

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Solution

The fourth proportional to 1,383.29, 1,908.83 and 793.70 is: 1,095.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,383.29 : 1,908.83 = 793.70 : x
  2. Step 2: Convert to fraction form
    1,383.29/1,908.83 = 793.70/x
  3. Step 3: Cross multiply
    1,383.29x = 1,908.83 × 793.70
  4. Step 4: Simplify right side
    1,383.29x = 1,515,034.40
  5. Step 5: Solve for x
    x = 1,515,034.40/1,383.29
  6. Step 6: Final answer
    x = 1,095.24

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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.