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Finding the Fourth Proportional to 3,129.19, 4,693.82 and 937.94

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Solution

The fourth proportional to 3,129.19, 4,693.82 and 937.94 is: 1,406.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,129.19 : 4,693.82 = 937.94 : x
  2. Step 2: Convert to fraction form
    3,129.19/4,693.82 = 937.94/x
  3. Step 3: Cross multiply
    3,129.19x = 4,693.82 × 937.94
  4. Step 4: Simplify right side
    3,129.19x = 4,402,493.37
  5. Step 5: Solve for x
    x = 4,402,493.37/3,129.19
  6. Step 6: Final answer
    x = 1,406.91

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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.