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Finding the Fourth Proportional to 3,910, 5,865.96 and 1,174

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Solution

The fourth proportional to 3,910, 5,865.96 and 1,174 is: 1,761.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,910 : 5,865.96 = 1,174 : x
  2. Step 2: Convert to fraction form
    3,910/5,865.96 = 1,174/x
  3. Step 3: Cross multiply
    3,910x = 5,865.96 × 1,174
  4. Step 4: Simplify right side
    3,910x = 6,886,637.04
  5. Step 5: Solve for x
    x = 6,886,637.04/3,910
  6. Step 6: Final answer
    x = 1,761.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.