Home / 3,910.32-5,390.04-2,913.96

Finding the Fourth Proportional to 3,910.32, 5,390.04 and 2,913.96

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Solution

The fourth proportional to 3,910.32, 5,390.04 and 2,913.96 is: 4,016.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,910.32 : 5,390.04 = 2,913.96 : x
  2. Step 2: Convert to fraction form
    3,910.32/5,390.04 = 2,913.96/x
  3. Step 3: Cross multiply
    3,910.32x = 5,390.04 × 2,913.96
  4. Step 4: Simplify right side
    3,910.32x = 15,706,360.96
  5. Step 5: Solve for x
    x = 15,706,360.96/3,910.32
  6. Step 6: Final answer
    x = 4,016.64

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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.