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Finding the Fourth Proportional to 1,383.02, 1,908.60 and 793.62

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Solution

The fourth proportional to 1,383.02, 1,908.60 and 793.62 is: 1,095.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,383.02 : 1,908.60 = 793.62 : x
  2. Step 2: Convert to fraction form
    1,383.02/1,908.60 = 793.62/x
  3. Step 3: Cross multiply
    1,383.02x = 1,908.60 × 793.62
  4. Step 4: Simplify right side
    1,383.02x = 1,514,703.13
  5. Step 5: Solve for x
    x = 1,514,703.13/1,383.02
  6. Step 6: Final answer
    x = 1,095.21

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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.