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Finding the Fourth Proportional to 1,383.07, 1,908.43 and 793.51

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Solution

The fourth proportional to 1,383.07, 1,908.43 and 793.51 is: 1,094.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,383.07 : 1,908.43 = 793.51 : x
  2. Step 2: Convert to fraction form
    1,383.07/1,908.43 = 793.51/x
  3. Step 3: Cross multiply
    1,383.07x = 1,908.43 × 793.51
  4. Step 4: Simplify right side
    1,383.07x = 1,514,358.29
  5. Step 5: Solve for x
    x = 1,514,358.29/1,383.07
  6. Step 6: Final answer
    x = 1,094.93

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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.