Home / 3,920.75-5,908.65-3,531.19

Finding the Fourth Proportional to 3,920.75, 5,908.65 and 3,531.19

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Solution

The fourth proportional to 3,920.75, 5,908.65 and 3,531.19 is: 5,321.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,920.75 : 5,908.65 = 3,531.19 : x
  2. Step 2: Convert to fraction form
    3,920.75/5,908.65 = 3,531.19/x
  3. Step 3: Cross multiply
    3,920.75x = 5,908.65 × 3,531.19
  4. Step 4: Simplify right side
    3,920.75x = 20,864,565.79
  5. Step 5: Solve for x
    x = 20,864,565.79/3,920.75
  6. Step 6: Final answer
    x = 5,321.58

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.