Home / 3,980.03-5,479.86-3,032.78

Finding the Fourth Proportional to 3,980.03, 5,479.86 and 3,032.78

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Solution

The fourth proportional to 3,980.03, 5,479.86 and 3,032.78 is: 4,175.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,980.03 : 5,479.86 = 3,032.78 : x
  2. Step 2: Convert to fraction form
    3,980.03/5,479.86 = 3,032.78/x
  3. Step 3: Cross multiply
    3,980.03x = 5,479.86 × 3,032.78
  4. Step 4: Simplify right side
    3,980.03x = 16,619,194.65
  5. Step 5: Solve for x
    x = 16,619,194.65/3,980.03
  6. Step 6: Final answer
    x = 4,175.65

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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.