Home / 3,939.60-5,910.48-1,166.28

Finding the Fourth Proportional to 3,939.60, 5,910.48 and 1,166.28

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Solution

The fourth proportional to 3,939.60, 5,910.48 and 1,166.28 is: 1,749.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,939.60 : 5,910.48 = 1,166.28 : x
  2. Step 2: Convert to fraction form
    3,939.60/5,910.48 = 1,166.28/x
  3. Step 3: Cross multiply
    3,939.60x = 5,910.48 × 1,166.28
  4. Step 4: Simplify right side
    3,939.60x = 6,893,274.61
  5. Step 5: Solve for x
    x = 6,893,274.61/3,939.60
  6. Step 6: Final answer
    x = 1,749.74

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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.