Home / 9,118.74-13,680.24-2,879.38

Finding the Fourth Proportional to 9,118.74, 13,680.24 and 2,879.38

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Solution

The fourth proportional to 9,118.74, 13,680.24 and 2,879.38 is: 4,319.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,118.74 : 13,680.24 = 2,879.38 : x
  2. Step 2: Convert to fraction form
    9,118.74/13,680.24 = 2,879.38/x
  3. Step 3: Cross multiply
    9,118.74x = 13,680.24 × 2,879.38
  4. Step 4: Simplify right side
    9,118.74x = 39,390,609.45
  5. Step 5: Solve for x
    x = 39,390,609.45/9,118.74
  6. Step 6: Final answer
    x = 4,319.74

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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.