Home / 7,418.41-11,128.35-2,739.65

Finding the Fourth Proportional to 7,418.41, 11,128.35 and 2,739.65

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Solution

The fourth proportional to 7,418.41, 11,128.35 and 2,739.65 is: 4,109.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,418.41 : 11,128.35 = 2,739.65 : x
  2. Step 2: Convert to fraction form
    7,418.41/11,128.35 = 2,739.65/x
  3. Step 3: Cross multiply
    7,418.41x = 11,128.35 × 2,739.65
  4. Step 4: Simplify right side
    7,418.41x = 30,487,738.71
  5. Step 5: Solve for x
    x = 30,487,738.71/7,418.41
  6. Step 6: Final answer
    x = 4,109.74

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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.