Home / 9,118.72-13,679.92-2,879.70

Finding the Fourth Proportional to 9,118.72, 13,679.92 and 2,879.70

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Solution

The fourth proportional to 9,118.72, 13,679.92 and 2,879.70 is: 4,320.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,118.72 : 13,679.92 = 2,879.70 : x
  2. Step 2: Convert to fraction form
    9,118.72/13,679.92 = 2,879.70/x
  3. Step 3: Cross multiply
    9,118.72x = 13,679.92 × 2,879.70
  4. Step 4: Simplify right side
    9,118.72x = 39,394,065.62
  5. Step 5: Solve for x
    x = 39,394,065.62/9,118.72
  6. Step 6: Final answer
    x = 4,320.13

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1.5x scale

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.